Details of a Researcher - YOSHIKAWA Nobuyuki

Papers - YOSHIKAWA Nobuyuki

about 632

Study on Single Flux Quantum Floating-Point Divider Based on Goldschmidt's Algorithm

Akiyoshi Sanada, Yuki Yamanashi, Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity Vol.29 ( 5 ) 1301904 - 1301904 2019.3 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

Design of Adiabatic Quantum-Flux-Parametron Register Files Using a Top-Down Design Flow

Olivia Chen, Ro Saito, Tomoyuki Tanaka, Christopher L. Ayala, Naoki Takeuchi, Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity Vol.29 ( 5 ) 1302905 - 1302905 2019.3 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

ISSN Information:
Print ISSN: 1051-8223
Electronic ISSN: 1558-2515
CD: 2378-7074

Miniaturization of adiabatic quantum-flux-parametron circuits by adopting offset buffers

Yukihiro Okuma, Naoki Takeuchi, Yuki Yamanashi, Nobuyuki Yoshikawa

Superconductor Science and Technology Vol.32 ( 6 ) 065007 - 065007 2019.5 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Science Joint Work

Superconductor Amoeba-Inspired Problem Solvers for Combinatorial Optimization

Naoki Takeuchi, Masashi Aono, Nobuyuki Yoshikawa

PHYSICAL REVIEW APPLIED Vol.11 ( 4 ) 044069 - 044069 2019.4 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Publisher：APS Physics Joint Work

Adiabatic Quantum-Flux-Parametron: Towards Building Extremely Energy-Efficient Circuits and Systems

Olivia Chen, Ruizhe Cai, Yanzhi Wang, Fei Ke, Taiki Yamae, Ro Saito, Naoki Takeuch, Nobuyuki Yoshik … Show more authors

Scientific Reports Vol.9 10514 - 10514 2019.7 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Nature Limited Joint Work

Low-latency adiabatic superconductor logic using delay-line clocking

Naoki Takeuchi, Mai Nozoe, Yuxing He, Nobuyuki Yoshikawa

Applied Physics Letters Vol.115 ( 7 ) 072601 - 072601 2019.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：AIP Publishing LLC Joint Work

Demonstration of Single-Flux-Quantum 64-B Lookup Table With Cryo-CMOS Decoders for Reconfiguration

Yuki Hironaka and Takuya Hosoya and Yuki Yamanashi and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 32 ( 8 ) 1 - 5 2022.11 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Single Work

Design and Demonstration of a Superconducting Field-Programmable Gate Array Using Adiabatic Quantum-Flux-Parametron Logic and Memory

Takahashi Daichi, Takeuchi Naoki, Yamanashi Yuki, Yoshikawa Nobuyuki

IEEE Transactions on Applied Superconductivity 32 ( 7 ) 2022.10 [Reviewed]

DOI Web of Science

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Joint Work

Timing Controller for a Superconductor Microwave Switch using Adiabatic Quantum Flux Parametron Circuits

Shen Hongxiang, Takeuchi Naoki, Yamanashi Yuki, Yoshikawa Nobuyuki

電気学会論文誌．　Ａ 142 ( 5 ) 197 - 201 2022.5 [Reviewed]

DOI CiNii Research

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人電気学会 Joint Work

We are developing a microwave pulse generator, whose pulse width and amplitude can be arbitrarily controlled, to manipulate superconducting quantum computing systems. The proposed microwave pulse generator is made using superconducting circuits. It can be placed at a 4.2 K or lower temperature stages to control a large-scale quantum computing system effectively. One of the key components of the microwave pulse generator is the timing controller, which generates trigger pulses for the microwave switch to start and stop the microwave irradiation. The target frequency of the microwave is 5 GHz, and the timing controller has to generate trigger pulses with a time resolution of several nanoseconds. We designed a 4-bit timing controller using an adiabatic quantum flux parametron (AQFP) circuit, which is extremely energy-efficient superconducting logic. The designed timing controller derives two trigger pulses, start and stop, to the microwave switch at the timing designated by digital data. We implemented the AQFP timing controller using the AIST HSTP process and demonstrated its operation at 1 GHz. Its power dissipation was estimated as about 1.25×10-9 W at 1 GHz.

Low-Latency Adiabatic Quantum-Flux-Parametron Circuit Integrated With a Hybrid Serializer/Deserializer

Hironaka Yuki, Yamae Taiki, Ayala Christopher L., Yoshikawa Nobuyuki, Takeuchi Naoki

IEEE Access 10 133584 - 133590 2022 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Low-latency power-dividing clocking scheme for adiabatic quantum-flux-parametron logic

He Yuxing, Takeuchi Naoki, Yoshikawa Nobuyuki

APPLIED PHYSICS LETTERS 116 ( 18 ) 2020.5 [Reviewed]

DOI Web of Science

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Reducing Josephson junction count in superconducting BNNs using a serial iterative accumulator

Shen, HX; Li, ZY; Zhang, KZ; Yamanashi, Y; Yoshikawa, N

Superconductor Science and Technology 39 ( 2 ) 2026.2 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

A Finite State Automaton for the Tsetlin Machine Using High-Capacity Resettable D Flip-Flop Cells

Yoshikawa Nobuyuki, Yamanashi Yuki, Han Zeyu

IEEE Transactions on Applied Superconductivity 36 ( 5 ) 1 - 6 2026.1 [Reviewed]

DOI CiNii Research Repository

Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers Joint Work

Single Flux Quantum (SFQ) circuits provide ultrafast operation and low power consumption, making them attractive candidates for machine learning accelerators. The Tsetlin Machine (TM) is a low-complexity and highly interpretable architecture, organized as a voting system of propositional clauses. In the TM, an ensemble of finite-state automata (FSAs), called Tsetlin automata, independently decides whether to include or exclude specific literals. The chosen literals are assembled into propositional clauses that collectively form the voting system, while each FSA updates its state based on rewards or penalties determined by the prediction outcome. However, existing FSA designs for TM based on SFQ circuits still suffer from either a narrow margin or excessive circuit area. To achieve compact and stable state transitions using SFQ circuits, we designed High-Capacity Resettable D Flip-Flop (HC-RDFF) cells by cascading storage loops. The proposed FSA was implemented using two HC-RDFFs to store the include and exclude states, respectively. The FSA with 16 states requires only 395 Josephson junctions with a static power of approximately 128 W, exhibiting a bias margin of −21% to +25% at low speed and a maximum operating frequency of 20 GHz in simulation. We fabricated the HC-RDFF and the FSA using a 10 kA/cm² Nb four-layer superconducting process and verified their correct operation through low-speed measurements. The number of FSA states can be increased simply by extending the cascaded storage loops in the HC-RDFFs. We expect the proposed FSA to be suitable for constructing stable TM systems based on SFQ circuits with reduced hardware costs.

Readout of phase states in Josephson parametric oscillators using adiabatic quantum flux parametron

Shen, HX; Yoshikawa, N

Superconductor Science and Technology 39 ( 1 ) 2026.1 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Small-area and high-precision deterministic stochastic adder using single flux quantum circuit

Han, ZY; Mandai, Y; Yoshikawa, N; Yamanashi, Y

Superconductor Science and Technology 39 ( 1 ) 2026.1 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

High-speed, ultra-low-power, and robust superconductive neuron with ReLU activation

Ueno, Y; Hironaka, Y; Yoshikawa, N; Yamanashi, Y

NEUROMORPHIC COMPUTING AND ENGINEERING 5 ( 4 ) 44003 2025.12 [Reviewed]

DOI Web of Science Repository

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Joint Work

Reconfigurable in-memory XNOR processing element with external DC control currents for scalable superconducting binary neural networks

Han, ZY; Shen, HX; Yoshikawa, N; Yamanashi, Y

Superconductor Science and Technology 38 ( 12 ) 2025.12 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

MarginX: Simple and Fast Circuit Parameter Optimization Tool for Superconductor Circuits

MATSUOKA Sho, YOSHIKAWA Nobuyuki, YAMANASHI Yuki

IEICE Transactions on Electronics E108.C ( 11 ) 587 - 593 2025.11 [Reviewed]

DOI CiNii Research

Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会 Joint Work

For integrated circuit design, optimizing circuit parameters is crucial to achieve wide operating margins and high yields, even in the presence of fluctuations and variations in device characteristics. In this paper, we report the development of a new circuit parameter optimization tool for superconductor integrated circuits, leveraging the latest analog circuit simulator and the center of gravity method. The developed optimization tool, implemented in C++, utilizes a parallel processing algorithm for high-speed optimization. By using only the phase information of the Josephson junction to distinguish the correct behavior of the circuit, this tool can be applied not only to conventional single flux quantum (SFQ) circuits but also to superconductor circuits whose behavior is not based on a 2π phase change. We optimized several SFQ logic gates and compared the margin expansion and optimization time with conventional optimization tools. Our tool achieved an optimization time of less than 2% of that of conventional tools in most cases. This optimization tool facilitates the rapid parameter optimization of any superconductor circuits containing various types of Josephson junctions.

High-Capacity DFF Cells for Unary Computing Using Single-Flux Quantum Circuits

Han, ZY; Yoshikawa, N; Yamanashi, Y

IEEE Transactions on Applied Superconductivity 35 ( 8 ) 2025.11 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Modeling of Double-Fold Superconducting High-Q Coplanar Waveguide Resonators for Quantum Applications

Singh, J; Shen, HX; Yoshikawa, N; Suggisetti, P; Bhatt, D

IEEE Transactions on Applied Superconductivity 35 ( 8 ) 2025.11 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Characterization of Adiabatic Quantum-Flux-Parametrons in the MIT LL SFQ5ee+ Process

Tolpygo, SK; Golden, EB; Ayala, CL; Schindler, L; Johnston, MA; Parmar, N; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 35 ( 5 ) 2025.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Small-Area Sorting Network Based on Unary Coding Using Single Flux Quantum Circuits

Han, ZY; Yoshikawa, N; Yamanashi, Y

IEEE Transactions on Applied Superconductivity 35 ( 5 ) 2025.8 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

True stochastic number generator using adiabatic quantum-flux-parametron logic

Luo, WH; Chen, OLV; Yoshikawa, N; Takeuchi, N

Superconductor Science and Technology 38 ( 6 ) 2025.6 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Large fan-out single-flux-quantum stochastic number splitter utilizing frequency-synchronized superconductor random number generators

Asaka, K; Yoshikawa, N; Yamanashi, Y

Superconductor Science and Technology 38 ( 4 ) 2025.4 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Buffer and Splitter Insertion for Adiabatic Quantum-Flux-Parametron Circuits

R. Fu, M. Wang, Y. Kan, O. Chen, N. Yoshikawa, B. Yu, T. Y. Ho

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems 44 ( 3 ) 975 - 988 2025.3 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Single Work

Efficient Cartesian Genetic Programming-Based Automatic Synthesis Framework for Reversible Quantum-Flux-Parametron Logic Circuits

Rongliang Fu, Robert Wille, Nobuyuki Yoshikawa, Tsung-Yi Ho

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems 44 ( 9 ) 3369 - 3380 2025.2 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Single Work

Josephson Latching Driver Designed Using 10-kA/cm Nb Process as Interface for Josephson-CMOS Hybrid Memory

Hironaka, Y; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 35 ( 1 ) 2025.1 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Experimental Demonstration of 1.2-Gb/s/Channel Readout Operation of Josephson–CMOS Hybrid Memory

Hironaka, Y; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 35 ( 1 ) 2025.1 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Demonstration of Array and Wallace-Tree Multiplier Families Using Adiabatic Quantum Flux Parametrons

Hoshika, Y; Takagi, S; Tanaka, T; Ayala, CL; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 35 ( 1 ) 2025.1 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Implementation of Energy-Efficient Majority-Logic-Based Approximate Adders Using Adiabatic Quantum-Flux-Parametron Technology

WANG Mengmeng, CHEN Olivia, YOSHIKAWA Nobuyuki

IEICE Transactions on Electronics advpub ( 0 ) 2025 [Reviewed]

DOI CiNii Research

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会 Joint Work

Adiabatic quantum-flux-parametron (AQFP), a superconductor logic system, has the potential to achieve 104-105 times greater energy e!ciency than advanced CMOS while operating at several gigahertz clock frequencies. However, it requires improved circuit density. Approximate computing, a novel computing paradigm, reduces complexity and power consumption at the expense of accuracy, and is aimed at applications that can tolerate certain levels of faults. Hence, employing approximate computing in the design of AQFP arithmetic circuits not only enables further reduction in power consumption but also improves circuit density. In this study, we introduce two 2-bit approximate adders with different architectures, primarily utilizing three-input and five-input majority gates, which are compatible with the existing AQFP standard cell library. Our designs aim to reduce circuit complexity while maintaining a reasonable level of accuracy. The performance of these designs is evaluated based on multiple criteria, including Josephson junction (JJ) counts, circuit delays, energy, and error metrics. Our MAJ35AA design, composed of both a three-input majority gate and a five-input majority gate, shows superior hardware performance. It achieves a reduction of approximately 15% in JJ counts compared to the existing state-of-the-art approximate design. Furthermore, our design achieves a maximum absolute error (MAE) of 1 and a normalized mean error distance (NMED) of 0.0714, indicating that its accuracy level is equivalent to that of the state-of-the-art designs. We fabricated this design using the AIST 10 kA/cm2 high-speed standard process (HSTP) and validated its functionality through cryogenic measurements.

Rapid single-flux-quantum and adiabatic quantum-flux-parametron cell libraries using a 1 kA/cm2 niobium fabrication process

Taiki Yamae, Yuki Hironaka, Shuichi Nagasawa, Yuki Yamanashi, Nobuyuki Yoshikawa and Naoki Takeuchi

Scientific Reports 41429 2025 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Single Work

Design and fabrication of integrator using adiabatic quantum-flux-parametron circuit

H. Shen, Z. Han, Z. Li, Y. He, N. Yoshikawa

Supercond. Sci. Tech. 38 025017 2025 [Reviewed]

DOI

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work

Feedback-enabled low-latency adiabatic quantum-flux-parametron logic using a mixed clocking scheme

Y. He, Z. Lei, C. Wei, X. Zou, L. Yan, M. A. Johnston, N. Yoshikawa

Supercond. Sci. Tech. 38 025001 2025 [Reviewed]

DOI

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work

Stochastic matrix multiplier using superconductor single-flux-quantum circuit

Okumura Hijiri, Yoshikawa Nobuyuki, Yamanashi Yuki

Superconductor Science and Technology 37 ( 11 ) 115024 2024.10 [Reviewed]

DOI Web of Science CiNii Research

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Publishing Joint Work

A superconducting single-flux-quantum (SFQ) circuit is suitable for stochastic computation that represents information in terms of the probability of '1's in a finite-bit-length number train, due to its high-speed operation. In this paper, we demonstrate a matrix multiplier based on the SFQ logic circuits and superconductive random number generators (SRNGs). The stochastic multiplier required for the matrix product calculation is implemented using an AND gate. The stochastic adder is implemented by a multiplexer where the random number train generated by the SRNG is utilized as a control signal. We implemented 2 × 2 matrix multiplier targeting a frequency of 50 GHz, using the 10 kA cm−2 Nb 4-layer superconductor circuit fabrication process. Numerical calculation results show that the designed stochastic matrix multiplier can multiply with a computational error of 1.12% when the input stochastic numbers are 1000-bit number trains. In the measurements, the input stochastic numbers were also generated by SRNGs, and the operation of the test circuit was verified. We experimentally demonstrated the correct operation of the matrix multiplier, and the obtained calculation errors agreed with theoretical values. To the best of our knowledge, this is the first demonstration of stochastic arithmetic operation using SFQ circuits.

Microwave-multiplexed qubit controller using adiabatic superconductor logic

Takeuchi, N; Yamae, T; Yamashita, T; Yamamoto, T; Yoshikawa, N

npj Quantum Information 10 ( 1 ) 2024.6 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

High-temperature superconductor quantum flux parametron for energy efficient logic

Cai, H; LeFebvre, JC; Li, H; Cho, EY; Yoshikawa, N; Cybart, SA

Applied Physics Letters 124 ( 21 ) 2024.5 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

A binary neural computing unit with programmable gate using SFQ and CMOS hybrid circuit

Li Zongyuan, Shen Hongxiang, Yoshikawa Nobuyuki, Yamanashi Yuki

Superconductor Science and Technology 37 ( 6 ) 065012 2024.5 [Reviewed]

DOI Web of Science CiNii Research Repository

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Publishing Joint Work

Superconducting neural networks hold significant potential for future applications such as natural language processing and image recognition. To this end, we propose a binary neural computing unit implemented using a hybrid circuit of cryogenic CMOS and superconducting technologies. It offers two main advantages: firstly, we utilize current-mode computations for neural unit weight calculations, significantly reducing the unit's footprint and enabling the potential for higher integration in the future. Secondly, all computations are performed in a low-temperature environment, which implies the possibility of on-chip learning in superconducting neural networks and the potential for achieving faster training rates in the future. We fabricated the chip using Nb 1 kA cm−2 process (1KP) technology and experimentally verified the correctness of the circuit logic. The margins for various control parameters of the circuit are approximately around 30%, and the superconducting circuit power consumption is estimated to be around 4 microwatts.

Generating Microwave Signals with Enhancive Amplitudes Using Superconductor Single Flux Quantum Pulses for Controlling Quantum Bit

Hongxiang Shen, Yuxing He, Zeyu Han, Zongyuan Li, Wenhui Luo, Lan Cheng, Yanyi Luo, Bo Jing, Nobuyu … Show more authors

Adv. Quantum Technol. 7 2400001 2024.4 [Reviewed]

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Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work

High area efficiency binary neural processing elements with time-domain signals using SFQ circuits

Han Zeyu, Li Zongyuan, Yoshikawa Nobuyuki, Yamanashi Yuki

Superconductor Science and Technology 37 ( 4 ) 045014 2024.3 [Reviewed]

DOI CiNii Research

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Publishing Joint Work

Josephson parametric oscillator based Ising machine

Razmkhah, S; Kamal, M; Yoshikawa, N; Pedram, M

Physical Review B 109 ( 1 ) 2024.1 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Minimum energy dissipation required for information processing using adiabatic quantum-flux-parametron circuits

T. Yamae, N. Takeuchi, N. Yoshikawa

J. Appl. Physics. 135 063902 2024 [Reviewed]

DOI

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work

The Effect of Quantised Flux on AQFP Circuits for a Double-Active-Layered Niobium Fabrication Process

Schindler, L; Ayala, CL; Takeuchi, N; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 34 ( 3 ) 2024 [Reviewed] [Invited]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

In-Depth Timing Characterization of the Adiabatic Quantum-Flux-Parametron Logic Gate

Hoshika, Y; Ayala, CL; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 34 ( 4 ) 2024 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Implementation of Bayesian Network Based on Ultra-High-Speed Superconductor Random Number Generators

Yamanaka, R; Yoshikawa, N; Yamanashi, Y

IEEE Access 12 129081 - 129086 2024 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Extremely Energy-Efficient Non-Linear Function Approximation Framework Using Stochastic Superconductor Devices

Chen, OLV; Zhang, RY; Luo, WH; Wang, YZ; Yoshikawa, N

IEEE Transactions on Emerging Topics in Computing 12 ( 4 ) 956 - 967 2024 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

SuperSIM: a comprehensive benchmarking framework for neural networks using superconductor Josephson devices

G. Zhu, Y. Kan, R. Zhang, Y. Nakashima, W. Luo, N. Takeuchi, N. Yoshikawa

Supercond. Sci. Tech. 37 095022 2024 [Reviewed]

DOI

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work

Dual-mode neuron design with deterministic and non-deterministic operations using adiabatic superconductor devices

T. Yamauchi, N. Takeuchi, N. Yoshikawa, H. San, O. Chen

Supercond. Sci. Tech. 37 095027 2024 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Single Work

Adiabatic quantum-flux-parametron boosters for long interconnection and large fanouts

Mizushima, N; Takeuchi, N; Yamanashi, Y; Yoshikawa, N

Superconductor Science and Technology 36 ( 11 ) 2023.11 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Results From the ColdFlux Superconductor Integrated Circuit Design Tool Project

Fourie, CJ; Jackman, K; Delport, J; Schindler, L; Hall, T; Febvre, P; Iwanikow, L; Chen, OLV; Ayala … Show more authors

IEEE Transactions on Applied Superconductivity 33 ( 8 ) 2023.11 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

SupeRBNN: Randomized Binary Neural Network Using Adiabatic Superconductor Josephson Devices

Li, ZG; Yuan, G; Yamauchi, T; Masoud, Z; Xie, YY; Dong, PY; Tang, XL; Yoshikawa, N; Tiwari, D; Wang … Show more authors

56TH IEEE/ACM INTERNATIONAL SYMPOSIUM ON MICROARCHITECTURE, MICRO 2023 584 - 598 2023.10 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Amplitude-controllable microwave pulse generator using single-flux-quantum pulse pairs for qubit control

Shen, HX; Takeuchi, N; Yamanashi, Y; Yoshikawa, N

SUPERCONDUCTOR SCIENCE & TECHNOLOGY 36 ( 9 ) 2023.9 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Pulse-Density-Modulated Microwave Generator Using Single-Flux-Quantum Circuits for Controlling Qubits

Kunihiro, A; Yamanashi, Y; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of Max Pooling Operation Circuit for Binarized Neural Networks Using Single-Flux-Quantum Circuit

Han, ZY; Li, ZY; Yamanashi, Y; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Implementation of Energy-Efficient Binary Neural Networks Using Adiabatic Quantum-Flux-Parametron Logic

Yamauchi, T; San, H; Yoshikawa, N; Chen, O

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.8 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Component Demonstration of an SFQ Complex Event Detector Corresponding to Regular Expressions

Suzuki, T; Akizuki, K; Yamanashi, Y; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Demonstration of Interface Circuits for Adiabatic Quantum-Flux-Parametron Cell Library Using an Eight-Metal Layer Superconductor Process

Hironaka, Y; Meher, SS; Ayala, CL; He, YX; Tanaka, T; Habib, M; Sahu, A; Inamdar, A; Gupta, D; Yosh … Show more authors

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.8 [Reviewed] [Invited]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Analysis and Stabilization of Signal Reflections in Gate-to-Gate Connections for AQFP Circuits

Johnston, MA; Ayala, CL; Tanaka, T; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

An Adiabatic Quantum-Flux-Parametron 8-bit Ripple Carry Adder Using Delay-Line Clocking

Yamae, T; Takeuchi, N; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Adopting a Standard Track Routing Architecture for Next-Generation Hybrid AC/DC-Biased Logic Circuits

Schindler, L; Ayala, CL; Jackman, K; Fourie, CJ; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

A Full-Custom Design Flow and a Top-Down RTL-to-GDS Flow for Adiabatic Quantum-Flux-Parametron Logic Using a Commercial EDA Design Suite

Tanaka, T; Ayala, CL; Whiteley, S; Mlinar, E; Barker, A; Chen, S; Belov, A; Barbee, T; Kawa, J; Yos … Show more authors

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Sigmoid function generator using stochastic adiabatic superconductor logic

Luo, WH; Chen, O; Yoshikawa, N; Takeuchi, N

Applied Physics Letters 122 ( 24 ) 2023.6 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Reconfiguration of nondestructively readable superconductor memory by direct injection of magnetic flux to storage loop

Yamanashi, Y; Hosoya, T; Yoshikawa, N

APPLIED PHYSICS EXPRESS 16 ( 4 ) 2023.4 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

BOMIG: A Majority Logic Synthesis Framework for AQFP Logic

Rongliang Fu, Junying Huang, Mengmeng Wang, Yoshikawa Nobuyuki, Bei Yu, Tsung- Yi Ho, Olivia Chen

2023 Design, Automation & Test in Europe Conference & Exhibition (DATE) 1 - 2 2023.4 [Reviewed]

DOI CiNii Research

Language：English Publishing type：Research paper (international conference proceedings) Publisher：IEEE Joint Work

Pulse-Density-Modulated Microwave Generator Using Single-Flux-Quantum Circuits for Controlling Qubits

Kunihiro Akira, Yamanashi Yuki, Yoshikawa Nobuyuki

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023.3 [Reviewed]

CiNii Research

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers Joint Work

Superconducting qubits are generally controlled by irradiation with microwave pulses. We propose a 5-GHz-range microwave pulse generator based on pulse density modulation for controlling qubits using single-flux-quantum (SFQ) circuits. The proposed microwave pulse generator comprises a 100-GHz circular shift register and a band-pass filter (BPF). In this study, we investigated the relationship between the target envelope of the microwave amplitude and the SFQ pulse density based on the transfer function for the BPF and the frequency spectrum of an SFQ pulse. We implemented a 64-bit circular shift register and demonstrated its operation up to 68 GHz.

Scalable flux controllers using adiabatic superconductor logic for quantum processors

N. Takeuchi, T. Yamae, W. Luo, F. Hirayama, T. Yamamoto, N. Yoshikawa

Phys. Rev. Research 5 013145 2023.2 [Reviewed]

DOI

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work

超伝導回路によるイジングモデルに基づいた論理ゲートの設計

山梨裕希、三宅航平、菅原瑠偉、吉川信行

電子情報通信学会論文誌 C Vol.J106-C ( 6 ) 249 - 257 2023.1 [Reviewed] [Invited]

DOI

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

Amplitude-controllable microwave pulse generator using single-flux-quantum pulse pairs for qubit control

H. Shen, N. Takeuchi, Y. Yamanashi and N.Yoshikawa

Supercond. Sci. Tech. 36 095010 2023 [Reviewed]

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Analysis and Stabilization of Signal Reflections in Gate-to-Gate Connections for AQFP Circuits

M. A. Johnston, C. L. Ayala, T. Tanaka, N.Yoshikawa

IEEE Trans. Appl. Supercond. 33 ( 5 ) 1301005 2023 [Reviewed]

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Self-Resetting Interface Between Rapid Single-Flux-Quantum and Adiabatic Quantum-Flux-Parametron Circuits

Naruse, M; Yoshikawa, N; Takeuchi, N

IEEE Transactions on Applied Superconductivity 33 ( 8 ) 2023 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

General Matrix Synthesis for Cascaded-Block Filters With Flexible Bandwidth

He, YX; Zeng, Y; Shen, HX; Yoshikawa, N; Zou, XH; Yan, LS; Macchiarella, G

IEEE Transactions on Microwave Theory and Techniques 2023 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Implementation of an FFT-Based Neural Network Accelerator Using Rapid Single-Flux-Quantum Technology

Chen, O; Wang, YZ; Ke, F; Yoshikawa, N

2023 21ST IEEE INTERREGIONAL NEWCAS CONFERENCE, NEWCAS 2023 [Reviewed]

DOI Web of Science

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Asynchronous Single Flux Quantum Logic Gates Using Self-Clocking

Yamanashi, Y; Fujisawa, T; Li, ZY; Yoshikawa, N

IEEE Transactions on Applied Superconductivity 33 ( 5 ) 2023 [Reviewed]

DOI Web of Science

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Transmission Line Effects of Long Gate-to-Gate Interconnections in Adiabatic Quantum-Flux-Parametron Logic Circuits

Kazuhito Asai and Naoki Takeuchi and Hideo Suzuki and Yuki Yamanashi and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 32 ( 7 ) 1 - 7 2022.10 [Reviewed]

DOI Web of Science

Authorship：Last author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Single Work

Design of Discrete Hopfield Neural Network Using a Single Flux Quantum Circuit

Houwen He and Yuki Yamanashi and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 32 ( 4 ) 1 - 4 2022.6 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Single Work

Design of Binary Convolution Operation Circuit for Binarized Neural Networks Using Single-Flux-Quantum Circuit

Zongyuan Li and Yuki Yamanashi and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 32 ( 4 ) 1 - 5 2022.6 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Single Work

Boltzmann Machine Using Superconducting Circuits

Kohei Miyake and Yuki Yamanashi and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 32 ( 4 ) 1 - 5 2022.6 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Single Work

Compact RSFQ microwave pulse generator based on an integrated RF module for controlling superconducting qubits

He Yuxing, Shen Hongxiang, Michibayashi Shiori, Zou Xihua, Xie Xiaojun, Yan Lianshan, Pan Wei, Yosh … Show more authors

Applied Physics Letters 120 ( 6 ) 2022.2 [Reviewed]

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Adiabatic Quantum-Flux-Parametron: A Tutorial Review

TAKEUCHI Naoki, YAMAE Taiki, AYALA Christopher L., SUZUKI Hideo, YOSHIKAWA Nobuyuki

IEICE Transactions on Electronics advpub ( 0 ) 2022 [Reviewed] [Invited]

DOI CiNii Research

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会 Joint Work

The adiabatic quantum-flux-parametron (AQFP) is an energy-efficient superconductor logic element based on the quantum flux parametron. AQFP circuits can operate with energy dissipation near the thermodynamic and quantum limits by maximizing the energy efficiency of adiabatic switching. We have established the design methodology for AQFP logic and developed various energy-efficient systems using AQFP logic, such as a low-power microprocessor, reversible computer, single-photon image sensor, and stochastic electronics. We have thus demonstrated the feasibility of the wide application of AQFP logic in future information and communications technology. In this paper, we present a tutorial review on AQFP logic to provide insights into AQFP circuit technology as an introduction to this research field. We describe the historical background, operating principle, design methodology, and recent progress of AQFP logic.

Adiabatic Quantum-Flux-Parametron With Delay-Line Clocking Using Square Excitation Currents

YAMAE Taiki, TAKEUCHI Naoki, YOSHIKAWA Nobuyuki

IEICE Transactions on Electronics advpub ( 0 ) 277 - 282 2022 [Reviewed]

DOI CiNii Research

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会 Joint Work

The adiabatic quantum-flux-parametron (AQFP) is an energy-efficient superconductor logic device. In a previous study, we proposed a low-latency clocking scheme called delay-line clocking, and several low-latency AQFP logic gates have been demonstrated. In delay-line clocking, the latency between adjacent excitation phases is determined by the propagation delay of excitation currents, and thus the rising time of excitation currents should be sufficiently small; otherwise, an AQFP gate can switch before the previous gate is fully excited. This means that delay-line clocking needs high clock frequencies, because typical excitation currents are sinusoidal and the rising time depends on the frequency. However, AQFP circuits need to be tested in a wide frequency range experimentally. Hence, in the present study, we investigate AQFP circuits adopting delay-line clocking with square excitation currents to apply delay-line clocking in a low frequency range. Square excitation currents have shorter rising time than sinusoidal excitation currents and thus enable low frequency operation. We demonstrate an AQFP buffer chain with delay-line clocking using square excitation currents, in which the latency is approximately 20 ps per gate, and confirm that the operating margin for the buffer chain is kept sufficiently wide at clock frequencies below 1 GHz, whereas in the sinusoidal case the operating margin shrinks below 500 MHz. These results indicate that AQFP circuits adopting delay-line clocking can operate in a low frequency range by using square excitation currents.

A 16-bit parallel prefix carry look-ahead Kogge-Stone adder implemented in adiabatic quantum-flux-parametron logic

TANAKA Tomoyuki, AYALA Christopher L., YOSHIKAWA Nobuyuki

IEICE Transactions on Electronics advpub ( 0 ) 270 - 276 2022 [Reviewed]

DOI CiNii Research

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会 Joint Work

Extremely energy-efficient logic devices are required for future low-power high-performance computing systems. Superconductor electronic technology has a number of energy-efficient logic families. Among them is the adiabatic quantum-flux-parametron (AQFP) logic family, which adiabatically switches the quantum-flux-parametron (QFP) circuit when it is excited by an AC power-clock. When compared to state-of-the-art CMOS technology, AQFP logic circuits have the advantage of relatively fast clock rates (5 GHz to 10 GHz) and 5 - 6 orders of magnitude reduction in energy before cooling overhead. We have been developing extremely energy-efficient computing processor components using the AQFP. The adder is the most basic computational unit and is important in the development of a processor. In this work, we designed and measured a 16-bit parallel prefix carry look-ahead Kogge-Stone adder (KSA). We fabricated the circuit using the AIST 10 kA/cm2 High-speed STandard Process (HSTP). Due to a malfunction in the measurement system, we were not able to confirm the complete operation of the circuit at the low frequency of 100 kHz in liquid He, but we confirmed that the outputs that we did observe are correct for two types of tests: (1) critical tests and (2) 110 random input tests in total. The operation margin of the circuit is wide, and we did not observe any calculation errors during measurement.

Adiabatic quantum-flux-parametron with delay-line clocking: logic gate demonstration and phase skipping operation

Taiki Yamae and Naoki Takeuchi and Nobuyuki Yoshikawa

Superconductor Science and Technology 34 ( 12 ) 2021.12 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：{IOP} Publishing Joint Work

Frequency synchronization of single flux quantum oscillators

Yamanashi Yuki, Kinoshita Ryo, Yoshikawa Nobuyuki

Superconductor Science and Technology 34 ( 10 ) 2021.10 [Reviewed]

CiNii Research

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Publishing Ltd Joint Work

We demonstrate the frequency synchronization of multiple single-flux quantum (SFQ) oscillators with different oscillation frequencies. To synchronize these SFQ oscillators, a common constant bias current is supplied to the SFQ oscillators without any bias resistors. When an SFQ oscillator oscillates at a frequency off, the average voltage across the Josephson junction comprising the SFQ oscillator is f Phi(0), where Phi(0) is the flux quantum in the superconductor. The bias currents supplied to the SFQ oscillators are redistributed to eliminate the average voltage difference output from the SFQ oscillators. As a result, the oscillation frequencies of all the SFQ oscillators are synchronized. Simulation results indicate that SFQ oscillators with an oscillation frequency difference of more than 50 GHz can be synchronized. We experimentally demonstrate the frequency synchronization of two SFQ oscillators composed of circular Josephson transmission lines. Frequency synchronization is expected to contribute toward the development of a low-power stable clock source stabilizing SFQ circuit operation.

Planarized Nb 4-Layer Fabrication Process for Superconducting Integrated Circuits and Its Fabricated Device Evaluation

Shuichi NAGASAWA, Masamitsu TANAKA, Naoki TAKEUCHI, Yuki YAMANASHI, Shigeyuki MIYAJIMA, Fumihiro CH … Show more authors

IEICE Transactions on Electronics E104-C ( 9 ) 435 - 445 2021.9 [Reviewed]

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Language：English Publishing type：Research paper (scientific journal) Joint Work

Buffer Reduction Via N-Phase Clocking in Adiabatic Quantum-Flux-Parametron Benchmark Circuits

Ro Saito and Christopher L. Ayala and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 31 ( 6 ) 1 - 8 2021.9 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

A Compact Interface Between Adiabatic Quantum-Flux-Parametron and Rapid Single-Flux-Quantum Circuits

Yuichi Yamazaki and Naoki Takeuchi and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 31 ( 5 ) 1 - 5 2021.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

Low-Autocorrelation Random Number Generator Based on Adiabatic Quantum-Flux-Parametron Logic

Wenhui Luo and Naoki Takeuchi and Olivia Chen and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 31 ( 5 ) 1 - 5 2021.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Single Work

Logic Synthesis of Sequential Logic Circuits for Adiabatic Quantum-Flux-Parametron Logic

Ro Saito and Christopher L. Ayala and Olivia Chen and Tomoyuki Tanaka and Tomohiro Tamura and Nobuy … Show more authors

IEEE Transactions on Applied Superconductivity 31 ( 5 ) 1 - 5 2021.8 [Reviewed]

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Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

Impedance Design of Excitation Lines in Adiabatic Quantum-Flux-Parametron Logic Using InductEx

Naoki Takeuchi and Hideo Suzuki and Coenrad J. Fourie and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 31 ( 5 ) 1 - 5 2021.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

Design and Evaluation of 2-bit-Input Single-Flux-Quantum Autocorrelator System for Astronomical Data Analysis

Lisa Shirakawa and Yuki Yamanashi and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 31 ( 5 ) 1 - 1 2021.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

Design and Demonstration of Directly Coupled Quantum-Flux-Parametron Circuits With Optimized Parameters

Ryohei Ishida and Naoki Takeuchi and Taiki Yamae and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 31 ( 5 ) 1 - 5 2021.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

Demonstration of a 47.8 GHz High-Speed FFT Processor Using Single-Flux-Quantum Technology

Ke Fei, Chen Olivia, Wang Yanzhi, Yoshikawa Nobuyuki

IEEE Transactions on Applied Superconductivity 31 ( 5 ) 2021.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

An Adiabatic Superconductor Comparator With 46 nA Sensitivity

Naoki Takeuchi and Taiki Yamae and Hideo Suzuki and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 31 ( 5 ) 1 - 5 2021.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

超伝導集積回路評価用の広帯域クライオプローブの開発

鈴木秀雄, 竹内尚輝, 吉川信行

電子情報通信学会論文誌C J104-C ( 6 ) 193 - 201 2021.6 [Reviewed] [Invited]

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Demonstration of an efficient single flux quantum logic circuit by introducing a local magnetic flux biasing

Asada Shunta, Yamanashi Yuki, Yoshikawa Nobuyuki

Superconductor Science and Technology 34 ( 5 ) 055007 2021.5 [Reviewed]

DOI CiNii Research

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Publishing Ltd Joint Work

We investigated local magnetic flux biasing (LFB) that induces a phase shift in superconductor circuits by locally applying a magnetic field through the superconductor loop with Josephson junctions. The arbitrary phase shift can be achieved using LFB without modifying the circuit fabrication process. To quantitatively evaluate the effects of introducing LFB for practical superconductor circuit applications, we designed a single flux quantum (SFQ) based non-destructive read-out flip-flop with complementary outputs (NDROC) and a delay flip-flop with complementary outputs (DFFC). The circuit area and static power consumption of the NDROC based on LFB architecture (LFB-NDROC) are approximately 67% and 36% of a conventional NDROC, respectively. The measured bias margin of the LFB-NDROC was in the range of 69%-129%. Using LFB, we were able to reduce the circuit area and power consumption for the DFFC by 67% and 83%, respectively. The measured bias margin of the DFFC with LFB was between 115% and 128%. LFB enabled us to implement a 5-to-32 SFQ decoder which comprises NDROC trees with a reduced circuit area of approximately 60% of a conventional decoder. The results obtained in this study can be applied to not just SFQ circuits but other superconductor circuits also, as they improve the area and power efficiency of such circuits.

Compact Superconducting Lookup Table Composed of Two-Dimensional Memory Cell Array Reconfigured by External DC Control Currents

Hosoya Takuya, Yamanashi Yuki, Yoshikawa Nobuyuki

IEEE Transactions on Applied Superconductivity 31 ( 3 ) 2021.4 [Reviewed]

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Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

MANA: A Monolithic Adiabatic iNtegration Architecture Microprocessor Using 1.4-zJ/op Unshunted Superconductor Josephson Junction Devices

Christopher L. Ayala and Tomoyuki Tanaka and Ro Saito and Mai Nozoe and Naoki Takeuchi and Nobuyuki … Show more authors

IEEE Journal of Solid-State Circuits 56 ( 4 ) 1152 - 1165 2021.4 [Reviewed]

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Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

Binary Counters Using Adiabatic Quantum-Flux-Parametron Logic

Taiki Yamae and Naoki Takeuchi and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 31 ( 2 ) 1 - 5 2021.3 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

Synthesis and Design of Quasi-Canonical Planar Filters Comprising Cascaded Frequency-Variant Blocks

Yuxing He and Giuseppe Macchiarella and Zhewang Ma and Nobuyuki Yoshikawa

IEEE Transactions on Microwave Theory and Techniques 69 ( 1 ) 671 - 681 2021.1 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

Planarized Nb 4-Layer Fabrication Process for Superconducting Integrated Circuits and Its Fabricated Device Evaluation

NAGASAWA Shuichi, SEGA Naonori, MIZUGAKI Yoshinao, MYOREN Hiroaki, TERAI Hirotaka, HIDAKA Mutsuo, Y … Show more authors

IEICE Transactions on Electronics E104.C ( 9 ) 435 - 445 2021 [Reviewed]

DOI CiNii Research

Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会 Joint Work

We developed a Nb 4-layer process for fabricating superconducting integrated circuits that involves using caldera planarization to increase the flexibility and reliability of the fabrication process. We call this process the planarized high-speed standard process (PHSTP). Planarization enables us to flexibly adjust most of the Nb and SiO2 film thicknesses; we can select reduced film thicknesses to obtain larger mutual coupling depending on the application. It also reduces the risk of intra-layer shorts due to etching residues at the step-edge regions. We describe the detailed process flows of the planarization for the Josephson junction layer and the evaluation of devices fabricated with PHSTP. The results indicated no short defects or degradation in junction characteristics and good agreement between designed and measured inductances and resistances. We also developed single-flux-quantum (SFQ) and adiabatic quantum-flux-parametron (AQFP) logic cell libraries and tested circuits fabricated with PHSTP. We found that the designed circuits operated correctly. The SFQ shift-registers fabricated using PHSTP showed a high yield. Numerical simulation results indicate that the AQFP gates with increased mutual coupling by the planarized layer structure increase the maximum interconnect length between gates.

A high-speed interface based on a Josephson latching driver for adiabatic quantum-flux-parametron logic

CHINA Fumihiro, TAKEUCHI Naoki, SUZUKI Hideo, YAMANASHI Yuki, TERAI Hirotaka, YOSHIKAWA Nobuyuki

IEICE Transactions on Electronics advpub ( 0 ) 264 - 269 2021 [Reviewed]

DOI CiNii Research

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会 Joint Work

The adiabatic quantum flux parametron (AQFP) is an energy-efficient, high-speed superconducting logic device. To observe the tiny output currents from the AQFP in experiments, high-speed voltage drivers are indispensable. In the present study, we develop a compact voltage driver for AQFP logic based on a Josephson latching driver (JLD), which has been used as a high-speed driver for rapid single-flux-quantum (RSFQ) logic. In the JLD-based voltage driver, the signal currents of AQFP gates are converted into gap-voltage-level signals via an AQFP/RSFQ interface and a four-junction logic gate. Furthermore, this voltage driver includes only 15 Josephson junctions, which is much fewer than in the case for the previously designed driver based on dc superconducting quantum interference devices (60 junctions). In measurement, we successfully operate the JLD-based voltage driver up to 4 GHz. We also evaluate the bit error rate (BER) of the driver and find that the BER is 7.92×10-10 and 2.67×10-3 at 1 GHz and 4 GHz, respectively.

Investigation of the Effects of 1/f Noise on Superconducting Circuits

Yusuke Tsuna and Yuki Yamanashi and Nobuyuki Yoshikawa

IEEE Transactions on Applied Superconductivity 30 ( 7 ) 1 - 4 2020.10 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Single Work

Design and Characterization of Track Routing Architecture for RSFQ and AQFP Circuits in a Multilayer Process

Coenrad Johann Fourie, Christopher Lawrence Ayala, Lieze Schindler, Tomoyuki Tanaka, Nobuyuki Yoshi … Show more authors

IEEE Transactions on Applied Superconductivity 30 ( 6 ) 1301109-1 - 1301109-9 2020.9 [Reviewed]

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Language：English Publishing type：Research paper (scientific journal) Joint Work

Proposal of ultra-low voltage quantum well optical modulator for optical interconnection in superconducting integrated circuit systems

K. Sakai, S. Kato, N. Yoshikawa, Y. Kokubun, T. Arakawa

Japanese Journal of Applied Physics 59 ( SO ) OB01-1 - OB01-6 2020.8 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Joint Work

Directly coupled adiabatic superconductor logic

Naoki Takeuchi and Kota Arai and Nobuyuki Yoshikawa

Superconductor Science and Technology 33 ( 6 ) 065002 2020.6 [Reviewed]

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Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：{IOP} Publishing Single Work

A semi-custom design methodology and environment for implementing superconductor adiabatic quantum-flux-parametron microprocessors

Christopher Lawrence Ayala and Ro Saito and Tomoyuki Tanaka and Olivia Chen and Naoki Takeuchi and … Show more authors

Superconductor Science and Technology 33 ( 5 ) 2020.5 [Reviewed] [Invited]

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Demonstration of a Single-Flux-Quantum Microprocessor Operating With Josephson-CMOS Hybrid Memory

Y. Hironaka, Y. Yamanashi, N. Yoshikawa

IEEE Transactions on Applied Superconductivity 30 ( 7 ) 1301206-1 - 1301206-6 2020.5 [Reviewed]

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Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

Other Link： https://doi.org/10.1109/TASC.2020.2994208

Scalable readout interface for superconducting nanowire single-photon detectors using AQFP and RSFQ logic families

N. Takeuchi, F. China, S. Miki, S. Miyajima, M. Yabuno, N. Yoshikawa, H. Terai

Optics Express 28 ( 11 ) 15824 - 15834 2020.5 [Reviewed]

DOI

Language：English Publishing type：Research paper (scientific journal) Joint Work

Sharp-selectivity in-line topology low temperature superconducting bandpass filter for superconducting quantum applications

Yuxing He, Shiori Michibayashi, Naoki Takeuchi, Nobuyuki Yoshikawa

Superconductor Science and Technology 33 ( 3 ) 035012 - 035012 2020.2 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Science Joint Work

A compact AQFP logic cell design using an 8-metal layer superconductor process

Yuxing He, Christopher L Ayala, Naoki Takeuchi, Taiki Yamae, Yuki Hironaka, Anubhav Sahu, Vikram Gu … Show more authors

Superconductor Science and Technology 33 ( 3 ) 035010 - 035010 2020.2 [Reviewed]

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Language：English Publishing type：Research paper (scientific journal) Publisher：IOP Science Joint Work

Design and Demonstration of an Adiabatic-Quantum-Flux-Parametron Field-Programmable Gate Array Using Josephson-CMOS Hybrid Memories

Okuma Yukihiro, Takeuchi Naoki, Yamanashi Yuki, Yoshikawa Nobuyuki

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 29 ( 8 ) 2019.12 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Systematic method to evaluate energy dissipation in adiabatic quantum-flux-parametron logic

Yamae Taiki, Takeuchi Naoki, Yoshikawa Nobuyuki

JOURNAL OF APPLIED PHYSICS 126 ( 17 ) 2019.11 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

A Feedback-Friendly Large-Scale Clocking Scheme for Adiabatic Quantum-Flux-Parametron Logic Datapaths

Takeuchi Naoki, Ayala Christopher Lawrence, Chen Olivia, Yoshikawa Nobuyuki

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 29 ( 5 ) 2019.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Simulation of the Margins in Single Flux Quantum Circuits Containing pi-Shifted Josephson Junctions

Yamanashi Yuki, Nakaishi Sotaro, Yoshikawa Nobuyuki

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 29 ( 5 ) 2019.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Fabrication of Adiabatic Quantum-Flux-Parametron Integrated Circuits Using an Automatic Placement Tool Based on Genetic Algorithms

Tanaka Tomoyuki, Ayala Christopher L., Xu Qiuyun, Saito Ro, Yoshikawa Nobuyuki

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 29 ( 5 ) 1 - 6 2019.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

Demonstration of Picosecond Time Resolution in Double-Oscillator Time-to-Digital Converter Using Single-Flux-Quantum Circuits

Tomitsuka Yuma, Yamanashi Yuki, Zen Nobuyuki, Ohkubo Masataka, Yoshikawa Nobuyuki

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 29 ( 5 ) 2019.8 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Demonstration of a Superconducting Nanowire Single-Photon Detector using Adiabatic Quantum-Flux-Parametron Logic in a 0.1-W Gifford-McMahon Cryocooler

Takeuchi Naoki, Yamashita Taro, Miyajima Shigeyuki, Miki Shigehito, Yoshikawa Nobuyuki, Terai Hirot … Show more authors

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 29 ( 5 ) 1 - 4 2019.8 [Reviewed]

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Language：English Publishing type：Research paper (scientific journal) Publisher：Institute of Electrical and Electronics Engineers ({IEEE}) Joint Work

ColdFlux Superconducting EDA and TCAD Tools Project: Overview and Progress

Fourie Coenrad Johann, Jackman Kyle, Botha Matthys M., Razmkhah Sasan, Febvre Pascal, Ayala Christo … Show more authors

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 29 ( 5 ) 2019.8 [Reviewed]

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Language：English Publishing type：Research paper (scientific journal) Joint Work

Advanced Direct Synthesis Approach for High Selectivity In-Line Topology Filters Comprising N - 1 Adjacent Frequency-Variant Couplings

YUXING HE, (Member, IEEE), GIUSEPPE MACCHIARELLA, (Fellow, IEEE), ZHEWANG MA, (Member, IEEE), LIGUO … Show more authors

7 41659 - 41668 2019.3 [Reviewed]

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Language：English Publishing type：Research paper (scientific journal) Joint Work

Adiabatic quantum-flux-parametron with pi Josephson junctions

Arai Kota, Takeuchi Naoki, Yamashita Taro, Yoshikawa Nobuyuki

JOURNAL OF APPLIED PHYSICS 125 ( 9 ) 093901 2019.3 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：{AIP} Publishing Joint Work

A reversible full adder using adiabatic superconductor logic

Yamae Taiki, Takeuchi Naoki, Yoshikawa Nobuyuki

SUPERCONDUCTOR SCIENCE & TECHNOLOGY 32 ( 3 ) 2019.3 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

An adiabatic superconductor 8-bit adder with 24k(B)T energy dissipation per junction

Takeuchi Naoki, Yamae Taiki, Ayala Christopher L., Suzuki Hideo, Yoshikawa Nobuyuki

APPLIED PHYSICS LETTERS 114 ( 4 ) 2019.1 [Reviewed]

DOI Web of Science

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Superconducting Digital Electronics for Controlling Quantum Computing Systems

YOSHIKAWA Nobuyuki

IEICE Transactions on Electronics 102 ( 3 ) 217 - 223 2019 [Reviewed] [Invited]

DOI CiNii Research

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：一般社団法人電子情報通信学会 Single Work

The recent rapid increase in the scale of superconducting quantum computing systems greatly increases the demand for qubit control by digital circuits operating at qubit temperatures. In this paper, superconducting digital circuits, such as single-flux quantum and adiabatic quantum flux parametron circuits are described, that are promising candidates for this purpose. After estimating their energy consumption and speed, a conceptual overview of the superconducting electronics for controlling a multiple-qubit system is provided, as well as some of its component circuits.

Influence of Magnetic Flux Trapped in Moats on Superconducting Integrated Circuit Operation

Yamanashi Yuki, Imai Hibiki, Yoshikawa Nobuyuki

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 28 ( 7 ) 2018.10 [Reviewed]

DOI Web of Science

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Joint Work

Thermally Assisted Superconductor Transistors for Josephson-CMOS Hybrid Memories

K. Sano, M. Suzuki, K. Maruyama, S. Taniguchi, M. Tanaka, A. Fujimaki, M. Inoue, N. Yoshikawa

IEICE Transaction on Electronics E101-C ( 5 ) 370 - 377 2018.5 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG Joint Work

Adiabatic Quantum-Flux-Parametron-Based Microprocessor: Architecture, Logic Design, Modeling, and Design Tools

C. Ayala, N. Takeuchi, Q. Xu, Y. Yamanashi, T. Ortlepp, N. Yoshikawa,

The 11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium, 2018.2

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of a 1-bit SFQ CPU and Comparison with CMOS and AQFP Circuits

Y. Hironaka, C. Ayala, Y. Yamanashi, N. Yoshikawa

The 11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium 2018.2

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Simulation of Reversible Adders Using Adiabatic Quantum Flux Parametron Logic

T. Yamae, N. Takeuchi, Y. Yamanashi, N. Yoshikawa

The 11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium 9 2018.2

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Reduction of the Circuit Area of an 8-word by 1-bit Register Using Quantum Flux Parametron Latch

T. Tamura, C. Ayala, N. Takeuchi, Y. Yamanashi, N. Yoshikawa

The 11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium 8 2018.2

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Evaluation of a 4-Input Logic Block for Realization of FPGAs Using Single Flux Quantum Circuits

M. Araki, Y. Yamanashi, N. Yoshikawa

The 11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium 7 2018.2

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of an SFQ Complex Event Detector Circuit Corresponding to Regular Expressions

K. Akizuki, R. Sato, Y. Yamanashi, N. Yoshikawa

The 11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium 5 2018.2

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Simulation of a 7-bit 18-sample/cycle SFQ-Based Sine Wave Generator

F. Ke, Y. Yamanashi, T. Ortlepp, N. Yoshikawa

The 11th Superconducting SFQ VLSI Workshop (SSV 2018) / 6th CRAVITY Symposium 2018.2

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Recent Development and Applications of Adiabatic Quantum Flux Parametron Logic

N. Takeuchi, C. Ayala, Q. Xu, H. Suzuki, Y. Yamanashi, T. Ortlepp, N. Yoshikawa,

The 11th Superconducting SFQ VLSI Workshop (SSV 2018) 2018.2

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

A random-access-memory cell based on quantum flux parametron with three control lines

H. Takayama, N. Takeuchi, Y. Yamanashi, N. Yoshikawa

Journal of Physics. Conf. Series 1054 2018 [Reviewed]

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Design methodology of single-flux-quantum flip-flops composed of both 0- and π-shifted Josephson junctions

Y. Yamanashi, S. Nakaishi1, A. Sugiyama, N. Takeuchi, N. Yoshikawa

Supercond. Sci. Technol 31 2018 [Reviewed]

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Recent Progress on Reversible Quantum-Flux-Parametron for Superconductor Reversible Computing

N. Takeuchi, Y. Yamanashi, N. Yoshikawa

IEICE Transaction on Electronics E101-C ( 5 ) 352 - 358 2018 [Reviewed]

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Minimum energy dissipation required for a logically irreversible operation,

N. Takeuchi, N. Yoshikawa

Phys. Rev 2018 [Reviewed]

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Development and Demonstration of Routing and Placement EDA Tools for Large-Scale Adiabatic Quantum-Flux-Parametron Circuits

Y. Murai, Christopher L. Ayala, N. Takeuchi, Y. Yamanashi, and N. Yoshikawa

IEEE Transactions on Applied Superconductivity 27 ( 6 ) 2017.9 [Reviewed]

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Evaluation of current sensitivity of quantum flux parametron

Y. Yamanashi, T. Matsushima, N. Takeuchi, N. Yoshikawa and T. Ortlepp

Superconductor Science and Technology 30 ( 8 ) 2017.7 [Reviewed]

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Three-dimensional adiabatic quantum-flux-parametron fabricated using a double-active-layered niobium process

T. Ando, S. Nagasawa, N. Takeuchi, N. Tsuji, F. China, M. Hidaka, Y. Yamanashi, N. Yoshikawa

Superconductor Science and Technology 30 ( 7 ) 2017.6 [Reviewed]

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Reduction of the Supply Current of Single-Flux-Quantum Time-to-Digital Converters by Current Recycling Techniques

K. Sano, T. Shimoda, Y. Abe, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 27 ( 4 ) 1300305 - 1-5 2017.6 [Reviewed]

DOI Web of Science

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Demonstration of Signal Transmission Between Adiabatic Quantum-Flux-Parametrons and Rapid Single-Flux-Quantum Circuits Using Superconductive Microstrip Lines

F. China, N. Tsuji, T. Narama, N. Takeuchi, T. Ortlepp, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 27 ( 4 ) 1300205 - 1-5. 2017.6 [Reviewed]

DOI Web of Science

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Majority-logic-optimized parallel prefix carry look-ahead adder families using adiabatic quantum-flux-parametron logic

C. L. Ayala, N. Takeuchi, Y. Yamanashi, T. Ortlepp, N. Yoshikawa

IEEE Trans. Appl. Supercond. vol. 27 ( 4 ) 1300407 - 1-7 2017.6 [Reviewed]

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Josephson-CMOS Hybrid Memory With Nanocryotrons

M. Tanaka, M. Suzuki, G. Konno, Y. Ito, A.Fujimaki, N. Yoshikawa

IEEE Trans. Appl. Supercond. 27 ( 4 ) 1800904 - 1-4 2017.6 [Reviewed]

DOI Web of Science

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Reversibility and energy dissipation in adiabatic superconductor logic

N. Takeuchi, Y. Yamanashi, N. Yoshikawa

Scientific Reports 7 75 - 1-12 2017.6 [Reviewed]

DOI Web of Science PubMed

Language：English Publishing type：Research paper (scientific journal) Publisher：NATURE PUBLISHING GROUP Joint Work

Design and Implementation of a 16-Word by 1-Bit Register File Using Adiabatic Quantum Flux Parametron Logic

N. Tsuji, C. L. Ayala, N. Takeuchi, T. Ortlepp, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 27 ( 4 ) 1300904 - 1-4 2017.6 [Reviewed]

DOI Web of Science

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Fabricaton of NbTiN nanocryotrons for Josephson-CMOS hybrid memory application

K. Sano, M. Suzuki, M. Tanaka, A. Fujimaki, N. Yoshikawa

The 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

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Analysis of Relationship between Gray Zone and Energy Dissipation of Adiabatic Quantum Flux Parametron

T. Matsushima, Y. Yamanashi, N. Takeuchi, N. Yoshikawa, and T. Ortlepp

The 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

High-density Integration of Adiabatic Quantum-Flux-Parametron Circuits by Using Double-Active-Layered Niobium Process

F. China, N. Tsuji, T. Ando, H. Takayama, N. Takeuchi, S. Nagasawa, M. Hidaka, Y. Yamanashi, and N. … Show more authors

The 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Influences of Magnetic Flux Trapped in Moats on Superconducting Integrated Circuit Operation

Y. Yamanashi, H. Imai, N. Yoshikawa

The 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Performance Analysis of Synthesized Benchmark Circuits Implemented in Adiabatic Superconductor Logic

Q. Xu, R. Saito, Y. Murai, C. L. Ayala, N. Takeuchi, Y. Yamanashi, and N. Yoshikawa

he 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

A Large-Scale Design Flow for Adiabatic Quantum-Flux-Parametron Circuits with Retiming and Fan-out Deconstruction

C. L. Ayala, Q. Xu, Y. Murai, R. Saito, N. Takeuchi, Y. Yamanashi, T. Ortlepp, and N. Yoshikawa

The 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Analog Circuit Simulator for Superconducting Circuits Containing pi-Josephson Junctions

Y. Yamanashi, A. Sugiyama, N. Yoshikawa

The 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Demonstration of Power Divider for Adiabatic Quantum-Flux-Parametron Logic

Y. Xing, N. Takeuchi, K. Fang, Y. Yamanashi, and N. Yoshikawa

The 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

(Invited) Design and high speed demonstration of an SFQ complex event detector circuit for complex event processing

R. Sato, T. Ono, Y. Yamanashi, and N. Yoshikawa

The 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and implementation of scalable register files using adiabatic quantum flux parametron logic

N. Tsuji, N. Takeuchi, C. Ayala, Y. Yamanashi, and N. Yoshikawa

The 16th International Superconductive Electronics Conference (ISEC 2017) 2017.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Measurement of low bit-error-rates of adiabatic quantum-flux-parametron logic using a superconductor voltage driver

N. Takeuchi, H. Suzuki, N. Yoshikawa

Appl. Phys. Lett. 110 ( 20 ) 202601 2017.5 [Reviewed]

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Multi-excitation adiabatic quantum-flux-parametron

K. Fang, N. Takeuchi, T. Ando, Y. Yamanashi, N. Yoshikawa

Journal of Applied Physics 121 ( 14 ) 143901 2017.4 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER INST PHYSICS Joint Work

Design and Implementation of an SFQ-Based Single-Chip FFT Processor

T. Ono, H. Suzuki, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 27 ( 4 ) 1301505 - 1-5 2017.2 [Reviewed]

DOI Web of Science

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Fully Functional Operation of Low-Power 64-kb Josephson-CMOS Hybrid Memories

G. Konno, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. vol. 27 1300607 - 1-7 2017.1 [Reviewed] [Invited]

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Adiabatic quantum-flux-parametron cell library designed using a 10 kA cm-2 niobium fabrication process

N. Takeuchi, S. Nagaswa, F. China, T. Ando, M. Hidaka, Y. Yamanashi, N. Yoshikawa

Superconductor Science and Technology vol. 30, ( No. 3 ) pp 035002 - 1-6 2017.1 [Reviewed]

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Synthesis Flow for Cell-Based Adiabatic Quantum-Flux-Parametron Structural Circuit Generation With HDL Back-End Verification

Q. Xu, C. L. Ayala, N. Takeuchi, Y. Murai, Y. Yamanashi, N. Yoshikawa

IEEE Transactions on Applied Superconductivity 27 ( 4 ) 1301905 2017.1 [Reviewed]

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Adiabatic quantum-flux-parametron interface for the readout of superconducting nanowire single-photon detectors

N. Takeuchi, T. Yamashita, S. Miyajima, S. Miki, N. Yoshikawa, G. Terai

IEEE Transactions on Applied Superconductivity 25 ( 26 ) 32650 - 32658 2017 [Reviewed]

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Experimental and simulation results of a symmetrical pad to reduce a stray ground current in superconducting integrated circuits

(1) H. Suzuki, T. Ono, N. Yoshikawa

Journal of Physics. Conference Series. 871 2017 [Reviewed]

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非対称構造を用いた断熱型磁束量子パラメトロン定数セル

安藤拓生, 竹内尚輝, 山梨裕希, 吉川信行

電気学会論文誌A , vol. 136 ( No.12 ) pp 747 - 752 2016.12 [Reviewed]

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Language：Japanese Publishing type：Research paper (scientific journal) Publisher：電気学会 Joint Work

Improvement of Operation Speed of LR-Biased Low-Power Single-Flux Quantum Circuits by Introduction of Dynamic Resetting of Bias Currents

R. Tsutsumi, K. Sato, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 26 ( 8 ) 1301405 2016.12 [Reviewed]

DOI Web of Science

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Power Reduction of Josephson Random Access Memory Using Stochastic Resonance

R. Kihara, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 26 ( 8 ) 1301704 2016.12 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

HDL-Based Modeling Approach for Digital Simulation of Adiabatic Quantum Flux Parametron Logic

Q. Xu, C. L. Ayala, Y. Yamanashi, N. Takeuchi, N. Yoshikawa

IEEE Trans. Appl. Supercond. vol. 26 ( No. 8 ) 1301805 - 1-5 2016.12 [Reviewed]

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Statistical analysis of error rate of large-scale single flux quantum logic circuit by considering fluctuation of timing parameters

Y. Yamanashi, K. Masubuchi, N. Yoshikawa

Physica C 530 pp.101–103 2016.11 [Reviewed]

DOI Web of Science

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Design and Demonstration of Interface Circuits between Rapid Single-Flux-Quantum and Adiabatic Quantum-Flux-Parametron Circuits

F. China, T. Narama, N. Takeuchi, T. Ortlepp, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 26 ( 5 ) 1301305 2016.8 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

30 GHz Operation of Single-Flux-Quantum Arithmetic Logic Unit Implemented by Using Dynamically Reconfigurable Gates

Y. Yamanashi, S. Nishimoto, and N. Yoshikawa,

IEICE Transactions on Electronics E99-C ( 6 ) 692 - 696 2016.6 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：IEICE Joint Work

Inductance and Current Distribution Extraction in Nb Multilayer Circuits with Superconductive and Resistive Components

C. Fourie, N. Takeuchi, N. Yoshikawa

IEICE Transactions on Electronics E99-C ( 6 ) 683 - 691 2016.6 [Reviewed] [Invited]

DOI Web of Science

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Majority Gate-Based Feedback Latches for Adiabatic Quantum Flux Parametron Logic

Naoki TSUJI, Naoki TAKEUCHI, Yuki YAMANASHI, Thomas ORTLEPP, Nobuyuki YOSHIKAWA

IEICE Transactions on Electronics E99-C ( 6 ) 710 - 716 2016.6 [Reviewed]

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High-speed demonstration of low-power 1k-bit shift-register memories using LR-biasing SFQ circuits

T. Takahashi, R. Numaguchi, Y. Yamanashi, N. Yoshikawa

IEICE Electronics Express 13 ( 6 ) 20160074 2016.3 [Reviewed]

DOI Web of Science

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Magnetically coupled quantum-flux-latch with wide operation margins

N. Tsuji, N. Takeuchi, T. Narama, T. Ortlepp, Y. Yamanashi, N. Yoshikawa

Supercond. Sci. Technol. 28 ( 11 ) 115013 2015.9 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：IOP PUBLISHING LTD Joint Work

Thermodynamic Study of Energy Dissipation in Adiabatic Superconductor Logic

Naoki Takeuchi, Yuki Yamanashi, and Nobuyuki Yoshikawa

Phys. Rev. Applied 4 ( 3 ) 034007 2015.9 [Reviewed]

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Demonstration of single-flux-quantum readout circuits for time-of-flight mass spectrometry systems using superconducting strip ion detectors

K. Sano, Y. Takahashi, Y. Ymanashi, N. Yoshikawa, N. Zen, M. Ohkubo

Supercond. Sci. Technol. 28 ( 7 ) 074003 2015.6 [Reviewed]

DOI Web of Science

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High-Speed Demonstration of Bit-Serial Floating-Point Adders and Multipliers Using Single-Flux-Quantum Circuits

X. Peng, Q. Xu, T. Kato, Y. Yamanashi, N. Yoshikawa, A. Fujimaki, N. Takagi, K. Takagi and M. Hidaka

IEEE Trans. Appl. Supercond. 25 ( 3 ) 1301106 2015.6 [Reviewed] [Invited]

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High-Speed Operation of an SFQ Butterfly Processing Circuit for FFT Processors Using the 10 kA/cm2 Nb Process

Y. Sakashita, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 25 ( 3 ) 1301205 2015.6 [Reviewed] [Invited]

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Demonstration of Bit-Serial SFQ-Based Computing for Integer Iteration Algorithms

Q. Xu, X. Peng, T. Ortlepp, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 25 ( 3 ) 1300704 2015.6 [Reviewed] [Invited]

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Experimental Demonstration of Quantum-Flux-Latch-Based Circuits

N. Takeuchi, T. Ortlepp, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 25 ( 3 ) 1300803 2015.6 [Reviewed]

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Inductance and Coupling of Stacked Vias in a Multilayer Superconductive IC Process

C. J. Fourie, X. Peng, R. Numaguchi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 25 ( 3 ) 1101104 2015.6 [Reviewed]

DOI Web of Science

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Design Method of Single-Flux-Quantum Logic Circuits Using Dynamically Reconfigurable Logic Gates

Shohei Nishimoto, Yuki Yamanashi, Nobuyuki Yoshikawa

IEEE Trans. Appl. Supercond 25 ( 3 ) 1301405 2015.6 [Reviewed]

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High-Speed Operation of a Single Flux Quantum Multiple Input Merger Using a Magnetically Coupled SQUID Stack

Koji Sato, Yuki Yamanashi, Nobuyuki Yoshikawa

IEEE Trans. Appl. Supercond 25 ( 3 ) 1301605 2015.6 [Reviewed]

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Adiabatic quantum-flux-parametron cell library adopting minimalist design

N. Takeuchi, Y. Yamanashi, N. Yoshikawa

Journal of Applied Physics 117 ( 17 ) 173912 2015.5 [Reviewed]

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Design and demonstration of adiabatic quantum-flux-parametron logic circuits with superconductor magnetic shields

K. Inoue, N. Takeuchi, T. Narama, Y. Yamanashi, N. Yoshikawa

Supercond. Sci. Technol. 28 ( 4 ) 045020 2015.4 [Reviewed]

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50 GHz Demonstration of an Integer-Type Butterfly Processing Circuit for an FFT Processor Using the 10 kA/cm2 Nb Process

Y. Sakashita, Y. Yamanashi, N. Yoshikawa

IEICE Trans. Electron E98-C ( 3 ) 232 - 237 2015.3 [Reviewed]

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Fast and accurate inductance and coupling calculation for a multi-layer Nb process

C. J. Fourie, A. Takahashi, N. Yoshikawa

Supercond. Sci. Technol. 28 ( 3 ) 035013 2015.2 [Reviewed]

DOI Web of Science

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Energy efficiency of adiabatic superconductor logic

N. Takeuchi, Y. Yamanashi, N. Yoshikawa

Supercond. Sci. Technol. 28 ( 1 ) 015003 2015.1 [Reviewed]

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Reduction of the Jitter of Single-Flux-Quantum Time-to-Digital Converters for Time-of-Flight Mass Spectrometry

K. Sano, Y. Muramatsu, Y. Yamanashi, N. Yoshikawa, N. Zen, M. Ohkubo

Physica C 504 97 - 101 2014.9 [Reviewed]

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Yield analysis of large-scale adiabatic-quantum-flux-parametron logic: The effect of the distribution of the critical current

D. Si,N.Takeuchi, K. Inoue, Y. Yamanashi, N. Yoshikawa

Physica C 504 102 - 105 2014.9 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER Joint Work

Reversible logic gate using adiabatic superconducting devices

N. Takeuchi, Y. Yamanashi, N. Yoshikawa

Scientific Reports 4 6354 2014.9 [Reviewed]

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Language：English Publishing type：Research paper (scientific journal) Publisher：NATURE PUBLISHING GROUP Joint Work

Other Link： http://www.nature.com/srep/2014/140815/srep06354/full/srep06354.html

High-speed Experimental Demonstration of Adiabatic Quantum-Flux-Parametron Gates Using Quantum-Flux-Latches

N. Takeuchi, T. Ortlepp, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 24 ( 4 ) 1300204 2014.8 [Reviewed] [Invited]

DOI Web of Science

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Novel latch for adiabatic quantum-flux-parametron logic

N. Takeuchi, T. Ortlepp, Y. Yamanashi, N. Yoshikawa,

Journal of Applied Physics 115 ( 10 ) 103910 2014.3 [Reviewed]

DOI Web of Science

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Design and Evaluation of Magnetic Field Tolerant Single Flux Quantum Circuits for Superconductive Sensing Systems

Y. Yamanashi, N. Yoshikawa

IEICE Trans. Electron E97-C ( 3 ) 178 - 181 2014.3 [Reviewed]

DOI Web of Science

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Large-Scale Integrated Circuit Design Based on a Nb Nine-Layer Structure for Reconfigurable Data-Path Processors

A. Fujimaki, M. Tanaka, R. Kasagi, K. Takagi, M. Okada, Y. Hayakawa, K. Takata, H. Akaike, N. Yoshi … Show more authors

IEICE Trans. Electron E97-C ( 3 ) 157 - 165 2014.3 [Reviewed] [Invited]

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Language：English Publishing type：Research paper (scientific journal) Publisher：IEICE Joint Work

Design and High-Speed Demonstration of Single-Flux-Quantum Bit-Serial Floating-Point Multipliers Using a 10kA/cm2 Nb Process

X. Peng, Y. Yamanashi, N. Yoshikawa, A. Fujimaki, N. Takagi, K. Takagi, M. Hidaka

IEICE Trans. Electron E97-C ( ３ ) 188 - 193 2014.3 [Reviewed]

DOI Web of Science

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Nb 9-layer fabrication process for superconducting large-scale SFQ circuits and its process evaluation

S. Nagasawa, K. Hinode, T. Satoh, M. Hidaka, H. Akaike, A. Fujimaki, N. Yoshikawa, K. Takagi, N. Ta … Show more authors

IEICE Trans. Electron E97-C ( ３ ) 132 - 140 2014.3 [Reviewed]

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A Reconfigurable Data-Path Accelerator Based on Single Flux Quantum Circuits

H. Kataoka, H. Honda, F. Mehdipour, N. Yoshikawa, A. Fujimaki, H. Akaike, N. Takagi, K. Murakami

IEICE Trans. Electron E97-C ( 3 ) 141 - 148 2014.3 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：IEICE Joint Work

Design and Demonstration of a Single-Flux-Quantum Multi-Stop Time-to-Digital Converter for Time-of-Flight Mass Spectrometry

K. Sano, Y. Yamanashi, N. Yoshikawa

IEICE Trans. Electron E97-C ( 3 ) 182 - 187 2014.3 [Reviewed]

DOI Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：IEICE Joint Work

Optimization of SFQ logic gate considering dependence of its signal propagation delay on the bias voltage

M.Otsubo, Y. Yamanashi, N. Yoshikawa

Physics Procedia 58 216 - 219 2014 [Reviewed]

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Reversible Computing Using Adiabatic Superconductor Logic

N. Takeuchi, Y. Yamanashi, N. Yoshikawa

Lecture Notes in Computer Science 8507 15 - 25 2014 [Reviewed]

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Operation of an Adiabatic Quantum-Flux-Parametron Gate Using an On-chip AC Power Source

T. Mukaiyama, N. Takeuchi, K.Ehara,K.Inoue, Y. Yamanashi and N. Yoshikawa

IEEE Trans. Appl. Supercond. 23 ( 4 ) 1301605 2013.8 [Reviewed]

DOI Web of Science

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8-Bit Asynchronous Sparse-Tree Superconductor RSFQ Arithmetic-Logic Unit With a Rich Set of Operations

M. Dorojevets, C. L. Ayala, N. Yoshikawa and A. Fujimaki

IEEE Trans. Appl. 23 ( 3 ) 1700104 2013.6 [Reviewed]

DOI Web of Science

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20-GHz 8 × 8-bit Parallel Carry-Save Pipelined RSFQ Multiplier

M. Dorojevets, A. K. Kasperek, N. Yoshikawa, and A. Fujimaki

IEEE Trans. Appl. Supercond 23 ( 3 ) 1300104 2013.6 [Reviewed]

DOI

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16-Bit Wave-Pipelined Sparse-Tree RSFQ Adder

M. Dorojevets, C. L. Ayala, N. Yoshikawa and A. Fujimaki

IEEE Trans. Appl. Supercond. 23 ( 3 ) 1700605 2013.6 [Reviewed]

DOI Web of Science

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Pseudo Sigmoid Function Generator for a Superconductive Neural Network

Y. Yamanashi, K. Umeda, and N. Yoshikawa

IEEE Trans. Appl. Supercond 23 ( 3 ) 1701004 2013.6 [Reviewed]

DOI Web of Science

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Asynchronous Digital SQUID Magnetometer With an On-Chip Magnetic Feedback for Improvement of Magnetic Resolution

Y. Tsuga, Y. Yamanashi, and N. Yoshikawa

IEEE Trans. Appl. Supercond 23 ( 3 ) 1601405 2013.6 [Reviewed]

DOI Web of Science

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Improvement of Operating Margin of SFQ Circuits by Controlling Dependence of Signal Propagation Time on Bias Voltage

M. Otsubo, Y. Yamanashi, and N. Yoshikawa

IEEE Trans. Appl. Supercond 23 ( 3 ) 1300904 2013.6 [Reviewed]

DOI Web of Science

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Multiplexing Techniques of Single Flux Quantum Circuit Based Readout Circuit for a Multi-Channel Sensing System

K. Aoki, Y. Yamanashi, and N. Yoshikawa

IEEE Trans. Appl. Supercond. 23 ( 3 ) 2500204 2013.6 [Reviewed]

DOI Web of Science

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Development of pulse transfer circuits for serially biased SFQ circuits using the Nb 9-layer 1-μm process

K. Ehara, A. Takahashi, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Supercond. 23 ( 3 ) 1300504 2013.6 [Reviewed]

DOI Web of Science

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Design and implementation of 64-kb CMOS static RAMs for Josephson-CMOS hybrid memories

K. Kuwabara, H. Jin, Y. Yamanashi and N. Yoshikawa

IEEE Trans. Appl. Supercond 23 ( 3 ) 1700704 2013.6 [Reviewed]

DOI Web of Science

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Simulation and Experimental Demonstration of Logic Circuits Using an Ultra-low-power Adiabatic Quantum-flux-parametron

K. Inoue, N. Takeuchi, K. Ehara, Y. Yamanashi, and N. Yoshikawa

IEEE Trans. Appl. Supercond 23 ( 3 ) 1301105 2013.6 [Reviewed]

DOI Web of Science

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Margin and Energy Dissipation of Adiabatic Quantum-Flux-Parametron Logic at Finite Temperature

N. Takeuchi, K. Ehara, K. Inoue, Y. Yamanashi and N. Yoshikawa

IEEE Trans. Appl. Supercond 23 ( 3 ) 1700304 2013.6 [Reviewed]

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An adiabatic quantum flux parametron as an ultra-low-power logic device

Takeuchi Naoki, Ozawa Dan, Yamanashi Yuki, Yoshikawa Nobuyuki

Supercond. Sci. Tech. 26 ( 3 ) 035010 2013.3 [Reviewed]

DOI Web of Science

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Design and demonstration of an on-chip AC power source for adiabatic quantum-flux-parametron logic

Mukaiyama Takashi, Takeuchi Naoki, Yamanashi Yuki, Yoshikawa Nobuyuki

Supercond. Sci. Tech. 26 ( 3 ) 035018 2013.2 [Reviewed]

DOI Web of Science

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Measurement of 10 zJ energy dissipation of adiabatic quantum-flux-parametron logic using a superconducting resonator

N. Takeuchi, Y. Yamanashi and N. Yoshikawa

Appl. Phys. Lett. 102 ( 5 ) 052602 2013.2 [Reviewed]

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Simulation of sub-kBT bit-energy operation of adiabatic quantum-flux parametron logic with low bit-error-rate

N. Takeuchi, Y. Yamanashi and N. Yoshikawa

Appl. Phys. Lett 103 062602 2013 [Reviewed]

DOI

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Pulse-Height Distribution Analysis for Superconducting Nanostripline Ion Detector with a Fast Pulse-Integration Analog-Todigital Converter

Koji Suzuki, Masahiro Ukibe, Shigetomo Shiki, Shigehito Miki, Zhen Wang, Yoshihiro Takahashi, Nobuy … Show more authors

Physics Procedia 36 172 - 176 2012 [Reviewed]

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Implementation of SFQ Microwave Choppers for Controlling Quantum Bits

S. Miura, N. Takeuchi, Y. Yamanashi, N. Yoshikawa

Physics Procedia 36 250 - 255 2012 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

Investigation of Robust CMOS Amplifiers for Josephson-CMOS Hybrid Memories

Hyunjoo Jin, Keita Kuwabara, Yuki Yamanashi, Nobuyuki Yoshikawa

Physics Procedia 36 229 - 234 2012 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

Experimental Demonstration of an Operand Routing Network Prototype Employing Clock Control and Data Synchronization Scheme

Irina Kataeva, Hiroyuki Akaike, Akira Fujimaki, Nobuyuki Yoshikawa, Naofumi Takagi

Physics Procedia 36 349 - 353 2012 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

Integration of Optical Waveguides With Single Flux Quantum Circuits

Y. Arita, N. Yoshikawa, T. Baba

IEEE Trans. Appl. Superconductivity 12 839 – 842 2011 [Reviewed]

Web of Science

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High-Speed Test of a Radix-2 Butterfly Processing Element for Fast Fourier Transforms Using SFQ Circuits

F. Miyaoka, T. Kainuma, Y. Shimamura, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Superconductivity 12 823 - 826 2011 [Reviewed]

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100-GHz Single-Flux-Quantum Bit-Serial Adder Based on 10-kA/cm2 Niobium Process

M. Tanaka, H. Akaike, A. Fujimaki, Y. Yamanashi, N. Yoshikawa, S. Nagasawa, K. Takagi, N. Takagi

IEEE Trans. Appl. Superconductivity 12 792 – 796 2011 [Reviewed]

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Clock Line Considerations for an SFQ Large Scale Reconfigurable Data Paths Processor

I. Kataeva, H. Akaike, A. Fujimaki, N. Yoshikawa, S. Nagasawa, N. Takagi

IEEE Trans. Appl. Superconductivity 12 809 – 813 2011 [Reviewed]

Web of Science

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Design and Implementation of Component Circuits of an SFQ Half-Precision Floating-Point Adder Using 10-kA/cm^2 Nb Process

T. Kainuma, Y. Shimamura, F. Miyaoka, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Superconductivity 12 827 – 830 2011 [Reviewed]

Web of Science

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Demonstration of 30 Gbit/s Generation of Superconductive True Random Number Generator

T. Sugiura, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Superconductivity 21 843 – 846 2011 [Reviewed]

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Design and Evaluation of Multi-Flux-Quantum Drivers Using Under-Damped Josephson Junctions

D. Ozawa, Y. Yamanashi, N. Yoshikawa

IEEE Trans. Appl. Superconductivity 12 835 – 838 2011 [Reviewed]

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Design Approach of Dynamically Reconfigurable Single Flux Quantum Logic Gates

Y. Yamanashi, I. Okawa, N. Yoshikawa

IEEE Trans. Appl. Superconductivity 21 831 – 834 2011 [Reviewed]

Web of Science

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Design and Implementation of RSFQ Microwave Choppers for the Superconducting Quantum-Computing System

N. Takeuchi, Y. Yamanashi and N. Yoshikawa

IEICE Trans. Electron. E93-C 458 - 462 2010.4 [Reviewed]

Web of Science

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Statistical Evaluation of a Superconductive Physical Random Number Generator

T. Sugiura, Y. Yamanashi, N. Yoshikawa

IEICE Trans. Electron. E93-C 453 - 457 2010.4 [Reviewed]

Web of Science

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100 GHz Demonstrations Based on the Single-Flux-Quantum Cell Library for the 10 kA/cm2 Nb Multi-Layer Process

Y. Yamanashi, T. Kainuma, N. Yoshikawa, I. Kataeva, H. Akaike, A. Fujimaki, M. Tanaka, N. Takagi, S … Show more authors

IEICE Trans. Electron. E93-C 440 - 444 2010.4 [Reviewed]

Web of Science

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Integrating optical waveguides with SFQ circuits

Y. Arita, Y. Yamanashi, T. Baba, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of an SFQ Half-Precision Floating-Point Multipliers Using 10 kA/cm2 Nb Multi- Layer Process

Y. Shimamura, T. Kainuma, F. Miyaoka, H. Park, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Investigation of High-Speed CMOS Differential Amplifier for Josephson/CMOS Hybrid Memory Systems

H. Jin, Y. Okamoto, H. Park, K. Yaguchi, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Implementation of a Self-Bias Circuit for Josephson-CMOS Hybrid Memories

K. Yaguchi, Y. Okamoto, H. Jin, H. Park, Y. Yamanashi, N. Yoshikawa, and T. Van Duzer

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Proposal of Resettable Muller-C gates Using Single-Flux-Quantum Circuits

T. Kainuma, F. Miyaoka, Y. Shimamura, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of RSFQ Circuits for Controlling Superconducting Quantum Bits

N. Takeuchi, D. Ozawa, S. Miura, Y. Yamanashi, and Y. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Improvement of SFQ Circuit Systems for Measuring Escape Rates of Josephson Junctions

S. Miura, N. Takeuchi, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of Input Circuits for SFQ Multi-Stop Time-to-Digital Converters for Time-of-Flight Mass Spectrometry

Y. Takahashi, H. Suzuki, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Access Time Measurement of 64 kb Josephson/CMOS Hybrid Memories by using SFQ Time-to-Digital Converter

Y. Okamoto, H. Park, H. Jin, K. Yaguchi, Y. Yamanashi, N. Yoshikawa, and T. Van Duzer

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of a 2 x 2 switch using PTL-connectable logic cells

H. Suzuki, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

SFQ Chip-to-Chip Communication using Inductive Coupling

Y. Natsume, D. Ozawa, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Consideration of a digital SQUID with positive magnetic feedback

T. Shimojima, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of a single-flux quantum majority logic gate

K. Minami, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Effect of Parasitic Inductance and Capacitance on the Stability of Josephson Latching Drivers

T. Xue, P. Heejoung, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Evaluation of Multi-Flux Drivers Using High βc Junctions

D. Ozawa, Y. Natsume, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design Approach of Dynamically Reconfigurable Single Flux Quantum Logic Circuits

Y. Yamanashi, I. Okawa, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Demonstration of 30 GHz generation of truly random numbers using superconductive circuit

T. Sugiura, Y. Yamanashi, and N. Yoshikawa

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Development of SFQ Logic Gates Connectable to Passive Transmission Lines and Their Application to Digital Signal Processors

N. Yoshikawa, H. Suzuki, K. Taketomi, and Y. Yamanashi

Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010) 2010.1 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Access Time Measurement of 64-kb Josephson-CMOS Hybrid Memories using SFQ Time-to-Digital Converter

Y. Okamoto, H. Jin, K. Yaguchi, Y. Yamanashi, and N. Yoshikawa

IEICE Electron. Express 7 320 - 325 2010 [Reviewed]

Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

High-Speed Floating-Point Processors based on Single-Flux-Quantum Circuit Technology

N. Yoshikawa,T. Kainuma, H. Park, Y. Yamanashi, A. Fujimaki, N. Takagi and K. Takagi

Asian Conference of Applied Superconductivity and Cryogenics (ACASC 2009) 2009.12 [Reviewed] [Invited]

Language：English Publishing type：Research paper (other science council materials etc.) Joint Work

Design of Component Circuits of an SFQ Half-Precision Floating-Point Adder using 10 kA/cm2 Nb Process

T. Kainuma, H. Park, Y. Yamanashi, N. Yoshikawa, A. Fujimaki, N. Takagi, K. Takagi

Abstracts on 22nd International Symposium on Superconductivity (ISS2009) 2009.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

On-Chip RSFQ Microwave Pulse Generator for Controlling Superconducting Qubits

N. Takeuchi, D. Ozawa, Y. Yamanashi, N. Yoshikawa

Abstracts on 22nd International Symposium on Superconductivity (ISS2009) 2009.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Component Design and Test of 50-GHz Half-Precision Floating-Point Adders and Multipliers

N. Yoshikawa, T. Kainuma, H. Park, Y. Yamanashi, A. Fujimaki, N. Takagi and K. Takagi

EUROFLUX 2009 International Conference 2009.9 [Reviewed] [Invited]

Language：English Publishing type：Research paper (other science council materials etc.) Joint Work

Recent Developments in Floating-Point Processors using Single-Flux-Quantum Circuits

N. Yoshikawa, H. Park, H. Hara, Y. Yamanashi, A. Fujimaki, K. Takagi, N. Takagi, M. Hidaka

9th European Conference on Applied Superconductivity (EUCAS 2009) 2009.9 [Reviewed] [Invited]

Language：English Publishing type：Research paper (other science council materials etc.) Joint Work

Design and Implementation of RSFQ Microwave Choppers for Controlling JosephsonJunction Qubits

N. Takeuchi, Y. Saito, Y. Yamanashi, N. Yoshikawa

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of SFQ Multi-Stop Time-to-Digital Converters for Time-of-Flight Mass Spectrometry

N. Yoshikawa, H. Suzuki, H. Hara, A. Murakami, Y. Yamanashi

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed] [Invited]

Language：English Publishing type：Research paper (other science council materials etc.) Joint Work

Design and High-speed Tests of Component Circuits of an SFQ Half-precision Floating-point Adder using 10 kA/cm2 Nb Process

T. Kainuma, H. Park, K. Taketomi, H. Hara, Y. Yananashi, N. Yoshikawa, M. Tanaka, Y. Ito, A. Fujima … Show more authors

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Access Time Measurements of Josephson/CMOS Hybrid Memories using SFQ Delay Measurement Circuits

Y. Okamoto, H. Park, H. Jin, K. Yaguchi, Y. Yamanashi, N.Yoshikawa, T. V. Duzer

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Nb Multi-layer Device Fabrication Technology

S. Nagasawa, T. Satoh, K. Hinode, Y. Kitagawa, M. Hidaka, H. Akaike, A. Fujimaki, N. Takagi, K. Tak … Show more authors

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed] [Invited]

Language：English Publishing type：Research paper (other science council materials etc.) Joint Work

Enhanced Flexibility of an Operand Routing Network for an SFQ-RDP

I. Kataeva, H. Akaike, A. Fujimaki, N. Yoshikawa, K. Takagi, N. Takagi, K. Murakami,

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of SFQ Circuits using PTL-connectable Logic Cells

H. Suzuki, H. Hara, Y. Yamanashi, N. Yoshikawa

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

High-Density Integration of Single-Flux-Quantum Circuits using Josephson Inductance

Y. Natsume, M. Igarashi, D. Ozawa, Y. Yamanashi, N. Yoshikawa

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Statistical Evaluation of a Superconductive Physical Random Number Generator

T. Sugiura, Y. Yamanashi, N. Yoshikawa

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Web of Science

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Improvements of Josephson-CMOS Hybrid Memory System

H. Park, T. V. Duzer, Q. Liu, S. R. Whiteley, Y. Okamoto, Y. Yamanashi, D. Wei, N. Yoshikawa

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

New Design to Show the Advantage of a Twisted-Pair Bias Supply Line for Large-Scale Josephson Circuits

Y. Yamanashi, T. V. Duzer, N. Yoshikawa

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Single-flux-quantum Cells and Circuits Based on a Nb Multi-layer Process

H. Akaike, M. Tanaka, K. Takagi, I. Kataeva, R. Kasagi, M. Itoh, A. Fujimaki, M. Igarashi, H. Park, … Show more authors

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Demonstration of 2x3 Reconfigurable-data-path Processors with 14000 Josephson Junctions

A. Fujimaki, R. Kasagi, K. Takagi, I. Kataeva, H. Akaike, M. Tanaka, N. Takagi, N. Yoshikawa, K. Mu … Show more authors

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed] [Invited]

Language：English Publishing type：Research paper (other science council materials etc.) Joint Work

100 GHz Demonstrations Based on the Single-Flux-Quantum Cell Library for the 10 kA/cm2 Nb Multi-Layer Process

Y. Yamanashi, T. Kainuma, M. Igarashi, H. Hara, K. Taketomi, H. Park, H. Suzuki, Y.Natsume, N. Yosh … Show more authors

Extended Abstract of International Superconductive Electronics Conference 2009 (ISEC 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Recent Research Activities in the MEXT SFQ Project

N. Yoshikawa

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed] [Invited]

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

High-Throughput Arithmetic Circuits based on Systolic Architecture for SFQ Reconfigurable Data-Path

M. Tanaka, K. Takagi, N. Takagi,Y. Yamanashi, N. Yoshikawa

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Implementation of a User Interface System for SFQ Microprocessors

W.H. Kim, Y. Yamanashi, K. Taketomi, H.J. Park, T. Kainuma, N. Yoshikawa

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Implementation of a Self-Bias Circuit for Josephson-CMOS Hybrid Memories

K. Yaguchi, Y. Okamoto, H. Jin, H. Park, Y. Yamanashi, N. Yoshikawa, T. Van Duzer

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Investigation of Characteristic Variations of Wholly CMOS Amplifiers for Josephson/CMOS Hybrid Memories

H. Jin, Y. Okamoto, K. Yaguchi, Y. Yamanashi, N. Yoshikawa

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Investigation of Multi-Flux Drivers using High-bc Junctions

D. Ozawa, Y. Natsume, Y. Yamanashi, N. Yoshikawa

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Evaluation of Logic-Level Simulation using the Single-Flux-Quantum Cell Library for the 10 kA/cm2 Nb Multi-Layer Process

T. Kainuma, H. Suzuki, Y. Yamanashi, N. Yoshikawa, M. Tanaka, A. Fujimaki

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of Miniaturized Superconducting Passive Delay Lines for RSFQ Circuits

N. Takeuchi, H. Suzuki, Y. Yamanashi, N. Yoshikawa

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Numerical Simulation of Magnetic Shielding Effect in Superconducting Shield Structures

Y. Natsume, M. Igarashi, Y. Yamanashi, N. Yoshikawa

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

A Crossbar Switch for Routing of 2-bit Wide Data Streams

I. Kataeva, H. Akaike, A. Fujimaki, N. Yoshikawa, N. Takagi

Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009) 2009.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

New delay-time measurements on a 64 kb Josephson-CMOS hybrid memory with 600 ps access time

K. Fujiwara, Q. Liu, T. Van Duzer, X. Meng, N. Yoshikawa

IEEE Trans. Appl. Superconductivity 20 14 – 20 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of fast digit-serial adders using SFQ logic circuits

H. Park, Y. Yamanashi, N. Yoshikawa, M. Tanaka and A. Fujimaki

IEICE Electron. Express 6 1408 - 1413 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

3D simulation of superconducting microwave devices with an electromagneticfield simulator

N. Takeuchi, Y. Yamanashi, Y. Saito, N. Yoshikawa

Physica C 469 1662 - 1665 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

A high-throughput single-flux-quantum floating-point serial divider using the signed-digit representation

M. Tanaka, K. Obata, K. Takagi, N. Takagi, A. Fujimaki, N. Yoshikawa

IEEE Trans. Appl. Superconductivity 19 653 - 656 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Planarization Process for Fabricating Multi-Layer Nb Integrated Circuits Incorporating Top Active Layer

T. Satoh, K. Hinode, S. Nagasawa, Y. Kitagawa, M. Hidaka, N. Yoshikawa, H. Akaike, A. Fujimaki, K. … Show more authors

IEEE Trans. Appl. Superconductivity 19 167 - 170 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

An Operand Routing Network for an SFQ Reconfigurable Data-Paths Processor

I. Kataeva, H. Akaike, A. Fujimaki, N. Takagi, N. Yoshikawa, K. Inoue, H. Honda, K. Murakami

IEEE Trans. Appl. Superconductivity 19 665 - 669 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

SFQ pulse transfer circuits using inductive coupling for current recycling

M. Igarashi, K. Churei, N. Yoshikawa, K. Fujiwara, Y. Hashimoto

IEEE Trans. Appl. Superconductivity 19 649 - 652 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Superconductive Random Number Generator Using Thermal Noises in SFQ Circuits

Y. Yamanashi, and N. Yoshikawa

IEEE Trans. Appl. Superconductivity 19 630 - 633 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Implementation of SFQ Half-Precision Floating-Point Multipliers

H. Hara, H. Park, Y. Yamanashi, K. Taketomi, N. Yoshikawa, K. Obata, M. Tanaka, N. Takagi, K. Takag … Show more authors

IEEE Trans. Appl. Superconductivity 19 657 - 660 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Implementation of SFQ Half-Precision Floating-Point Adders

H. Park, Y. Yamanashi, K. Taketomi, N. Yoshikawa, M. Tanaka, K. Obata, Y. Itou, A. Fujimaki, N. Tak … Show more authors

IEEE Trans. Appl. Superconductivity 19 634 - 639 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of RSFQ microwave choppers for controlling Josephson junction qubits

Proceeding of 2008 International symposium on Physics of Quantum Technology 2008.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Implementation and low temperature tests of RSFQ microwave choppers or controlling Josephson junction qubit

Proceeding of 2008 International symposium on Physics of Quantum Technology 2008.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

New Nb multi-layer fabrication process for large-scale SFQ circuits

21th International Symposium on Superconductivity (ISS2008) 2008.10 [Reviewed]

Web of Science

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Recent development of Large-Scale reconfigurable data-paths using RSFQ Circuits

21th International Symposium on Superconductivity (ISS2008) 2008.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

SFQ cell design for A Nb-10-layer process

Abstracts on 21th International Symposium on Superconductivity (ISS2008) 2008.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

High-density integration of single-flux-quantum circuits using Josephson inductance

Abstracts on 21th International Symposium on Superconductivity (ISS2008) 2008.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

An operand routing network for an SFQ-RDP processor: new design and experimental results

Abstracts on 21th International Symposium on Superconductivity (ISS2008) 2008.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of SFQ circuits based on gate-to-gate wiring using passive transmission lines

Abstracts on 21th International Symposium on Superconductivity (ISS2008) 2008.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and implementation of A butterfly unit with memories for fast fourier transforming using SFQ circuits

Abstracts on 21th International Symposium on Superconductivity (ISS2008) 2008.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

3D simulation of superconducting microwave devices with an electromagneticfield simulator

Abstracts on 21th International Symposium on Superconductivity (ISS2008) 2008.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

SFQ time-to-digital converters

2nd panel discussion on standardization in superconducting electronics 2008.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Single Work

Novel serial-parallel converter using SFQ logic circuits

Physica C vol.468 pp. 1977 - 1982 2008.9 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Demonstration of an SFQ-Based Accelerator Prototype for a High-Performance Computer

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implementation of SFQ Half-Precision Floating-Point Multipliers

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

SFQ pulse transfer circuits using inductive coupling for current recycling

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Web of Science

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

An Operand Routing Network for an SFQ Reconfigurable Data-Paths Processor

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Web of Science

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implementation of SFQ Half-Precision Floating-Point Adders

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Multi-layer Nb Integrated Circuit Structure Incorporating the Top Active Layer

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and High-Speed Test of a Radix-2 Butterfly Unit for the Fast Fourier Transform Using SFQ Circuits

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

A high-throughput single-flux-quantum floating-point serial divider using the signed-digit representation

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

A Novel Power Line to Reduce the Magnetic Field of Supply Currents in Josephson Digital Circuits

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Superconductive Random Number Generator Using Thermal Noises in SFQ Circuits

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Web of Science

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Demonstration of picosecond-delay measurements of high-speed signals by single-flux-quantum double-oscillator time-to-digital converters

2008 Applied Superconductivity Conference (ASC 2008) 2008.8 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

RSFQ projects in Japan

5th FLUXONICS RSFQ design workshop 2008.6

Language：English Publishing type：Research paper (international conference proceedings) Single Work

Advanced aspects of VLSI design

5th FLUXONICS RSFQ design workshop 2008.6

Language：English Publishing type：Research paper (international conference proceedings) Single Work

Design and Implementation of the Butterfly Processing Unit for FFT processor using Rapid Single Flux Quantum Circuit

Superconducting SFQ VLSI Workshop 2008 P2 - 12 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Bit-Serial Single Flux Quantum Microprocessor CORE

IEICE Trans. Electron E91-C 342 - 349 2008.3 [Reviewed]

Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Proposal of a Desk-Side Supercomputer with Reconfigurable Data-Paths Using Rapid Single-Flux-Quantum Circuits

IEICE Trans. Electron E91-C 350 - 355 2008.3 [Reviewed]

Web of Science

Language：English Publishing type：Research paper (scientific journal) Joint Work

Access Time Measurement of Josephson-CMOS Hybrid Memories using SFQ Time-to-Digital Converter

Superconducting SFQ VLSI Workshop 2008 P2 - 11 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

New Nb multi-layer Fabrication Process for Superconducting SFQ VLSI Circuits

Superconducting SFQ VLSI Workshop 2008 A1 - 1 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Demonstration of the key components of an SFQ Reconfigurable Data-Paths Processor: an Operand Routing Network and a 2×2 RDP prototype

Superconducting SFQ VLSI Workshop 2008 I2 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

CORE1: Review and Recent Developments in Bit-serial SFQ Microprocessors

Superconducting SFQ VLSI Workshop 2008 I3 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Development of SFQ Logic Gated with Passive Transmission lines and Their Application to Digital Signal Processors

Superconducting SFQ VLSI Workshop 2008 A2 - 1 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Single Work

Design and Implementation of the SFQ Floating Point Units

Superconducting SFQ VLSI Workshop 2008 A2 - 5 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of SFQ logic cells connected directly to PTLs

Superconducting SFQ VLSI Workshop 2008 P2 - 4 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Delay Elements for Passive Transmission Lines Using Josephson Inductance

Superconducting SFQ VLSI Workshop 2008 P2 - 5 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

SFQ Pulse Transfer Circuits Using Inductive Coupling for Current Recycling

Superconducting SFQ VLSI Workshop 2008 P2 - 6 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Development of Short-Line-Width On-Chip Microwave Generators for Controlling Superconducting Qubits

Superconducting SFQ VLSI Workshop 2008 P2 - 7 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

High Density Integration of SFQ Shift Register Memories using Phase Quantum Logic Circuits

Superconducting SFQ VLSI Workshop 2008 P2 - 8 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implementation of the SFQ Half-Precision Floating Point Adder

Superconducting SFQ VLSI Workshop 2008 P2 - 9 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implement of SFQ Half-Precision the Floating-Point Multiplier

Superconducting SFQ VLSI Workshop 2008 P2 - 10 2008.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Superconductive Single-Flux-Quantum Circuit/System Technology and 40Gb/s Switch System Demonstration

Technical Digest, 2008 IEEE International Solid-State Circuit Conference (ISSCC2008) 532 - 533 2008.2 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Recent development and perspective of ultra-high-speed microprocessors using single-flux-quantum circuits

J91-C ( 3 ) 183 - 193 2008 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Single Work

Direct measurements of propagation delay of single-flux-quantum circuits by time-to-digital converters

IEICE Electronics Express Vol. 5 ( No. 9 ) pp.332 - 337 2008 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Superconductor Electronics based on Single-Flux-Quantum Circuit Technology

East Asia Symposium on Superconductor Electronics 2007.12

Language：English Publishing type：Research paper (international conference proceedings) Single Work

Parameter Optimization and Ber Measurement of Josephson Latching Drivers Using The 10 kA/cm2 Nb Process

Abstracts on 20th International Symposium on Superconductivity (ISS2007) FDP - 78, pp. 327 2007.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and High-speed Test of a Multiplier Accumulator for Fast Fourier Transforming Using SFQ Circuits

Abstracts on 20th International Symposium on Superconductivity (ISS2007) FD - 6, pp. 136 2007.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

D Flip-Flop Based Pulse Transfer Circuits for Current Recycling

Abstracts on 20th International Symposium on Superconductivity (ISS2007) FD - 7, pp. 137 2007.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Multufunctional Buffers Using SFQ Logic Circuits

Abstracts on 20th International Symposium on Superconductivity (ISS2007) FDP - 73, pp. 325 2007.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Access Time Measurement of 16-kb Josephson-CMOS Hybrid Memories Using RSFQ Time-to-Digital Converters

Abstracts on 20th International Symposium on Superconductivity (ISS2007) FDP - 74, pp. 325 2007.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Demonstration of Picosecond Delay Time Measurements of the Hight-Speed Signal from The Room Temperature by Single-Flux-Quantum Double-Oscillator Time-To-Digital Converters

Abstracts on 20th International Symposium on Superconductivity (ISS2007) FDP - 75, pp. 326 2007.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Examination of Bias-Current Shielding Structure of SFQ Logic Cells for The Large Circuit Yield

Abstracts on 20th International Symposium on Superconductivity (ISS2007) FDP - 76, pp. 326 2007.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implementation of a Fully Asynchronous SFQ Microprocessor: SCRAM2

IEEE Trans. Applied Superconductivity 17 478 - 481 2007.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

A New Design Approach for High-Throughput Arithmetic Circuits for Single-Flux-Quantum Microprocessors

IEEE Trans. Applied Superconductivity 17 . 516 - 519 2007.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Implementation of a Pipelined Bit-Serial SFQ Microprocessor, CORE1b

IEEE Trans. Applied Superconductivity 17 474 - 477 2007.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Latency and Power Measurements on a 64-kb Hybrid Josephson-CMOS Memory

IEEE Trans. Applied Superconductivity 17 526 - 529 2007.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of an SFQ Microwave Chopper for Controlling Quantum Bits

IEEE Trans. Applied Superconductivity 17 146 - 149 2007.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Study of LR-Loading Technique for Low-Power Single Flux Quantum Circuits

IEEE Trans. Applied Superconductivity 17 150 - 153 2007.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Implementation and Experimental Evaluation of a Cryocooled System Prototype for High-Throughput SFQ Digital Applications

IEEE Trans. Applied Superconductivity 17 546 - 551 2007.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Diagnostic Test of Large-Scale SFQ Shift Register

IEEE Trans. Applied Superconductivity 17 422 - 425 2007.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Bit-Error-Rate Measurements of RSFQ Shift Register Memories

T. Hikida, K. Fujiwara, N. Yoshikawa, A. Fujimaki, H. Terai, S. Yorozu

IEEE Trans. Applied Superconductivity 17 512 - 515 2007.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

Asynchronous High-Speed Operation of RSFQ First-In First-Out Buffers

Abstract of 11th International Superconductivity Conference O - S03 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Demonstration of picosecond delay time measurements by single-flux-quantum double-oscillator time-to-digital converters

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Characterization of 90 nm Cryo-CMOS Devices and Circuits for Hybrid Josephson-CMOS Memories

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of a reconfigurable data-path prototype in the single-flux-quantum circuit

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implementation of Single-Flux-Quantum Floating-Point Adders

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and implementation of a pipelined 8-bit-serial single-flux-quantum microprocessor with cache memories

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

4x4 SFQ network switch prototype system demonstration and 10-Gbps bit-error-rate test

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Parameter Optimization of Josephson Latching Drivers using Bit-Error-Rate Simulations

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Review of the CORE1 Microprocessor Project:Recent Development and Next Plans

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Half-Nanosecond Latency Measurement on a 64-kbit Josephson-CMOS Memory

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Scalable Cache Memory for a Bit-Serial Single-Flux-Quantum Microprocessor

Extended Abstract of 11th International Superconductivity Conference,Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Fast Bit-Serial Multipliers Using RSFQ Logic Circuits

Extended Abstract of 11th International Superconductivity Conference, Washington DC 2007.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Improvement of time resolution of the double-oscillator time-to-digital converter using SFQ circuits

Physica C 463-465 1088 - 1091 2007 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and implementetion of a pipelined 8-bit-serial single-flux-quantum microprocessor with cache memories

Supercond. Sci. Technol 20 S305 - S309 2007 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of a reconfigurable data-path prototype in the single-flux-quantum circuit

Supercond. Sci. Technol 20 S328 - S331 2007 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Single-flux-quantum integer multiplier with systolic array structure

Physica C 445-448 1014 - 1019 2006.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and implementation of low-power SFQ circuits using LR-load biasing technique

Physica C 445-448 1029 - 1033 2006.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Signal integrity in large-scale single-flux-quantum circuit

Physica C 445-448 1003 - 1007 2006.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

On-chip microwave generator for manipulation of superconductive quantum bits

Physica C 445-448 967 - 970 2006.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Reduction of a Bit-error-rate of Josephson Latching Drivers Using Series Inductors

on 19th International Symposium on Superconductivity (ISS2006) 333 2006.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Development of High-speed Single-flux-quantum Microprocessors

on 19th International Symposium on Superconductivity (ISS2006) 160 2006.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Quantative Evaluation of Delay Time in the Single-flux-Quantum Circuits

on 19th International Symposium on Superconductivity (ISS2006) 161 2006.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Study on a DC-powered On-chip Voltage Generator Using SFQ Circuits

on 19th International Symposium on Superconductivity (ISS2006) 329 2006.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Consideration of Low-power SFQ Circuits Using Josephson-junction-load Biasing

on 19th International Symposium on Superconductivity (ISS2006) 331 2006.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Bit-error-rate Simulations of Josephson Latching Drivers Using the 10kA/cm2Nb Process

on 19th International Symposium on Superconductivity (ISS2006) 332 2006.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Improvement of Time Resolution of the Double-Oscillator Time-to-digital Converter Using SFQ Circuits

on 19th International Symposium on Superconductivity (ISS2006) 333 2006.10

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implementation of a Fully Asynchronous RSFQ Microprocessor: SCRAM2

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 3EY02 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Implementation and experimental evaluation of a cryocooled system prototype for high-throughput SFQ digital applications

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 4EX01 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

A new design approach for high-throughput arithmetic circuits for single-flux-quantum

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 4EB06 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Diagnostic Test of Large-Scale SFQ Shift Register

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 2EI05 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Latency and Power Measurements on a 64-kb Hybrid Josephson-CMOS Memory

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 4EB08 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Study of LR-Loading Technique for Low-Power Single Flux Quantum Circuits

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 1EX07 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implementation of a Pipelined Bit-Serial SFQ Microprocessor, CORE1b

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 3EY01 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of Bit-Slice Adders Using RSFQ Logic Circuits

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 3EY03 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of an SFQ Microwave Chopper for Controlling Quantum Bits

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 1EX05 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Bit-Error-Rate Measurements of RSFQ Shift Register Memories

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 4EB05 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Access-Time Measurements of a Josephson-CMOS Hybrid Memory using an RSFQ Time-to-Digital Converter

Abstract of 2006 Applied Superconductivity Conference (ASC2006) 2EI03 2006.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

The influence of the ground current on large-scale single-flux-quantum circuits

Supercond. Sci. Technol 19 S362 - S365 2006 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

A new design approach for control circuits of pipelined single-flux-quantum microprocessors

Supercond. Sci. Technol. 19 S340 - S343 2006 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Access time measurements of Josephson-CMOS hybrid memory using single-flux-quantum circuits

Supercond. Sci. Technol. 19 S350 - S353 2006 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of a pipelined 8-bit-serial single-flux-quantum microprocessor with multiple ALUs

Supercond. Sci. Technol. 19 S344 - S349 2006 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

40-GHz operation of a single-flux-quantum (SFQ) 4 x 4 switch scheduler

Physica C 445-448 1008 - 1013 2005.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Parameter optimization of a Josephson latching driver based on bit-error-rate simulations

Physica C 426-431 ( Part2 ) 1680 - 1686 2005.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Consideration of logic synthesis and clock distribution networks for SFQ logic circuits

Physica C 426-431 ( Part 2 ) 1687 - 1692 2005.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of a datapath for single-flux-quantum microprocessors with multiple ALUs

Physica C 426-431 ( Part 2 ) 1693 - 1698 2005.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and implementation of double oscillator time-to-digital converter using SFQ logic circuits

Physica C 426-431 ( Part 2 ) 1699 - 1703 2005.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

A prototype cryocooled package for large-throughput superconducting digital systems

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 331 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Signal integrity in large-scale single-flux-quantum circuit

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 147 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

40-GHz operation of a single-flux quantum (SFQ) switch scheduler

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 148 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Single-flux-quantum integer multiplier with systolic array structure

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 149 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Influences of global dispersion of inductances on single flux quantum circuit operation

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 324 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of bit-slice adders using SFQ logic circuits

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 326 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

High-density SFQ integrated circuits using Josephson inductance

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 326 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of the microwave chopper for superconducting qubits

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 329 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and implementation of low-power SFQ circuits using LR-load-biasing technique

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 329 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

On-chip microwave generator for manipulation of superconductive quantum bits

Abstracts on 18th International Symposium on Superconductivity (ISS2005) 330 2005.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and investigation of gate-to-gate passive interconnections for SFQ logic circuits

IEEE Trans. Applied Superconductivity 15 3814 - 3820 2005.9 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

The Effect of Pulse Repulsion on the Timing Jitter in Josephson Transmission Line

7th European Conference on Applied Superconductivity (EUCUS'05) TU - P2-158 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Measurement of Quantized Energy Levels in a Josephson Junction Using Single Flux Quantum Circuits

Proceeding of 2005 Japan-Taiwan Symposium on Superconductive Electronics 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of a pipelined 8-bit-serial single-flux-quantum microprocessor with multiple ALUs

Extended Abstract of 10th International Superconductivity Conference O-A01 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Measurements on the Josephson-CMOS Hybrid Memory

Extended Abstract of 10th International Superconductivity Conference O-A03 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Access-Time Measurements of Josephson-CMOS Hybrid Memory using SFQ Circuits

Extended Abstract of 10th International Superconductivity Conference 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

A New Design Approach for Control Circuits of a Pipelined Single-Flux-Quantum Microprocessor

Extended Abstract of 10th International Superconductivity Conference P - B06 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of a CMOS Deceimation Filter for Josephson/CMOS Hybrid AD Converters

Extended Abstract of 10th International Superconductivity Conference P - B07 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Bit-Error-Rate Simulation of Josephson Latching Drivers using the 10kA/cm2 Nb Process

Extended Abstract of 10th International Superconductivity Conference P - I 09 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Influence of Ground Return Current on Large-Scale SFQ Circuits

Extended Abstract of 10th International Superconductivity Conference P - I 10 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Passive Transmission Lines Using Multilayered Wiring Structure in Single-Flux-Quantum Circuits

Extended Abstract of 10th International Superconductivity Conference P - I 11 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of a Pipelined Asynchronous SFQ Microprocessor Using Handshaking Protocol

Extended Abstract of 10th International Superconductivity Conference P - I 12 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Consideration of Logic Synthesis and a Clock Network for Single-Flux-Quantum Logic Circuits

Extended Abstract of 10th International Superconductivity Conference P - I 13 2005.9

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Integration of a prototype cryopackage with cryocooler for large-throughput superconducting digital systems

Extended Abstract of 10th International Superconductivity Conference O - V02 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Vector Processor System based on Single-Flux-Quantum Circuit Technology for Petaflops-Scale Computing

7th European Conference on Applied Superconductivity (EUCUS'05) TU - P2-156 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Hybrid Josephson-CMOS Memory in Advanced Technology and Larger Sizes

7th European Conference on Applied Superconductivity (EUCUS'05) TU - P2-153 2005.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

20 GHz operation of bit-serial handshaking systems using asynchronous SFQ logic circuits

IEEE Trans. Applied Superconductivity 15 255 - 258 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Characterization of 4 K CMOS devices and circuits for hybrid Josephson-CMOS systems

IEEE Trans. Applied Superconductivity 15 267 - 271 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Quantitative evaluation of the single-flux-quantum cross/bar switch

IEEE Trans. Applied Superconductivity 15 324 - 327 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Implementation of a 4 x 4 switch with passive interconnects

IEEE Trans. Applied Superconductivity 15 356 - 359 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

The relationship between bit-error rate, operating speed and circuit scale of SFQ circuits

IEEE Trans. Applied Superconductivity 15 364 - 367 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Advanced design approaches for SFQ logic circuits based on the binary decision diagram

IEEE Trans. Applied Superconductivity 15 380 - 383 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Progress of single flux quantum packet switch technology

S. Yorozu, Y. Kameda, Y. Hashimoto, H. Terai, A. Fujimaki, N. Yoshikawa

IEEE Trans. Applied Superconductivity 15 411 - 414 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE Joint Work

Simulation and measurements on a 64-kbit hybrid Josephson-CMOS memory

IEEE Trans. Applied Superconductivity 15 415 - 418 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Single-flux-quantum (SFQ) circuit design and test of crossbar switch scheduler

IEEE Trans. Applied Superconductivity 15 423 - 426 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Error rate test of large-scale SFQ digital circuit systems

IEEE Trans. Applied Superconductivity 15 427 - 430 2005.6

Language：English Publishing type：Research paper (scientific journal) Joint Work

Observation of quantized energy levels in a Josephson junction using SFQ circuits

IEEE Trans. Applied Superconductivity 15 864 - 867 2005.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Demonstration of a single-flux-quantum microprocessor using passive transmission lines

IEEE Trans. Applied Superconductivity 15 400 - 404 2005.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

RSFQ and hybrid JJ-CMOS memories

US/Japan/Europe Superconductor Digital Electronics Workshop 2005.5 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Single Work

High-Speed Integrated Systems Using Single-Flux-Quantum Circuits

2005 Symposium on COE 2005.3

Language：English Publishing type：Research paper (international conference proceedings) Single Work

Measurement of Quantized Energy Levels in a Josephson Junction Using Single Flux Quantum Circuits

Proceeding of 2005 Japan-Taiwan Symposium on Superconductive Electronics 2005.2 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Development of Passive Interconnection Technology for SFQ Circuits

IEICE TRANS E88-C 198 - 207 2005 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

High-Speed Demonstration of Single-Flux-Quantum Cross-Bar Switch up to 50 GHz

IEEE Trans. Applied Superconductivity 15 6 - 10 2005 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Implementation of Double Oscillator Time-to-Digital Converter using SFQ Logic Circuits

Abstracts on 17th International Symposium on Superconductivity (ISS2004) 322 2004.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Development of Single-Flux-Quantum Microprocessors

Abstracts on 17th International Symposium on Superconductivity (ISS2004) 322 2004.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Investigations of Passive Transmission Lines using Multilayered Wiring Structure in Single-Flux-Quantum Circuits

Abstracts on 17th International Symposium on Superconductivity (ISS2004) 322 2004.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Parameter Optimization of a Josephson Latching Driver based on Bit-Error-Rate Simulations

Abstracts on 17th International Symposium on Superconductivity (ISS2004) 322 2004.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Consideration of Logic Synthesis and Clock Distribution Networks for SFQ Logic Circuits

Abstracts on 17th International Symposium on Superconductivity (ISS2004) 322 2004.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of a Datapath for Single-Flux-Quantum Microprocessors with Multiple ALUs

Abstracts on 17th International Symposium on Superconductivity (ISS2004) 322 2004.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Advanced Design Approaches for SFQ Logic Circuits Based on the Binary Decision Diagram

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 5EJ06 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Demonstration of a Single-Flux-Quantum Microprocessor Using Passive Transmission Lines

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 1ES01 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Progress of Single Flux Quantum Packet Switch Technology

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 1ES04 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Simulation and Measurements on a 64-kbit Hybrid Josephson-CMOS Memory

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 1ES05 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Single-flux-quantum (SFQ) circuit design and test of crossbar switch scheduler

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 1ES07 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Error Rate Test of Large-Scale SFQ Digital Circuit Systems

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 1ES08 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Quantitative Evaluation of the Single-Flux-Quantum Cross/Bar Switch

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 2EK04 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Demonstration of a Single-Flux-Quantum 2x2 Switch Prototype with Time-Shift-Speedup-Buffer

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 3EA01 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

20 GHz Operation of Bit-Serial Handshaking Systems using Asynchronous SFQ Logic Circuits

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 3EA03 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Characterization of 4 K CMOS Devices and Circuits for Hybrid Josephson-CMOS Systems

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 3EA06 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Observation of Quantized Energy Levels in a Josephson Junction Using SFQ Circuits

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 3ER01 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Experimental Analysis of Pulse Propagation in Narrowed Passive Transmission Lines

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 4EI02 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Implementation of a 4X4 switch with passive interconnects

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Magnetic Shielding against DC Bias Current toward Large-Scale SFQ Integrated Circuits

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 4ES05 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

The Relationship Between Bit-Error Rate, Operating Speed, and Circuit Scale of SFQ Circuits

Abstract of 2004 Applied Superconductivity Conference (ASC2004) 5EJ01 2004.10 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

High-Speed Digital Systems by Hybridization of CMOS and Single-Flux-Quantum Logic Circuits

Extended Abstracts of the 2004 International conference on Solid State Devices and Materials 142 - 143 2004.9 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

A Single-Flux-Quantum Logic Prototype Microprocessor

Technical Digest of IEEE International Solid-State Circuits Conference 298 - 299 2004.2 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

SFQ/半導体出力インターフェースシステムの最適化とビットエラーレートの評価

山城洋、藤原完、吉川信行、原田直樹、平野悟、吉田晃、萬伸一

電子情報通信学会超伝導エレクトロニクス研究会 SCE2003-39 2004.1

Language：Japanese Publishing type：Research paper (international conference proceedings) Joint Work

Design and implementation of circuit components of the SFQ microprocessor, CORE1

Supercond. Sci. Technol 17 301 - 307 2004 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Timing jitter measurement of single-flux-quantum pulse in Josephson transmission line

Appl. Phys. Lett. 84 2133 - 2135 2004 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

High-speed measurement method of quantized energy levels in Josephson junctions using SFQ circuits

Physica C 412-414 1546 - 1549 2004 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and implementation of SFQ programmable clock generators

Physica C 412-414 1550 - 1554 2004 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Superconducting Digital Electronics

Proceedings of the IEEE 92 1549 - 1563 2004 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Josephson Latching Driver with a Low Bit-Error Rate

IEEE Trans. Applied Superconductivity 14 2031 - 2036 2004 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

High-Speed Digital Systems by Hybridization of CMOS and Single-Flux-Quantum Logic Circuits

Extended Abstracts of the 2004 International conference on Solid State Devices and Materials 142 - 143 2004

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

18 GHz Operation of an 8-bit Microprocessor Based on a Single-Flux-Quantum LSI Technology

Extended Abstracts of the 2004 International conference on Solid State Devices and Materials 140 - 141 2004

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Logic Operation at 5 Gbps of an Output Interface for Single Flux Quantum Systems

IEEE Trans. Applied Superconductivity 13 3814 - 3817 2003.9 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Recent SFQ research in Japan

Extended Abstract of 9th International Superconductivity Conference ITh3 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and High-Speed Test of 4 x 8-bit SFQ Shift Register Files

Extended Abstract of 9th International Superconductivity Conference PMo11 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of the speedup buffer for the SFQ network switch

Extended Abstract of 9th International Superconductivity Conference PMo12 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Demonstration of passive interconnection between single-flux-quantum circuit blocks

Extended Abstract of 9th International Superconductivity Conference PMo13 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implementation of a High-Speed Bit-Serial Adder Based on the Binary Decision Diagram

Extended Abstract of 9th International Superconductivity Conference PMo21 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design and Implementation of Circuit Components of the SFQ Microprocessor, CORE 1

Extended Abstract of 9th International Superconductivity Conference PMo26 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

New design approach to realize high-density SFQ circuit using multi wiring layer process

Extended Abstract of 9th International Superconductivity Conference PMo34. 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

High-speed interface amplifiers for SFQ-to-CMOS conversion

Extended Abstract of 9th International Superconductivity Conference PMo35 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

A Calculation of Bias Current Distribution in Large-Scale SFQ Logic Circuits

Extended Abstract of 9th International Superconductivity Conference PMo37 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Bit-Error-Rate Simulation of Josephson Latching Drivers for SFQ-Semiconductor Hybrid Systems

Extended Abstract of 9th International Superconductivity Conference PMo38 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

20 GHz Operation of Bit-Serial Handshaking Modules for Asynchronous SFQ Logic Circuit Systems

Extended Abstract of 9th International Superconductivity Conference PMo39 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Prototypic Design of the Single-Flux-Quantum Microprocessor, CORE1

Extended Abstract of 9th International Superconductivity Conference PTu38 2003.7 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Josephson-CMOS hybrid memory with ultra-high-speed interface circuit

IEEE Trans. Appl. Superconductivity 13 467 - 470 2003.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Component Test of a Tiny Processor based on the SFQ Technology

IEEE Trans. Appl. Superconductivity 13 441 - 445 2003.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Cell Based Design Methodology for BDD SFQ Logic Circuits: a High Speed Test and Feasibility for Large Scale Circuit Applications

IEEE Trans. Appl. Superconductivity 13 523 - 526 2003.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Component Test of SFQ Shift Register Memories

IEEE Trans. Appl. Superconductivity 13 555 - 558 2003.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

A Behavioral-Level HDL Description of SFQ Logic Circuits for Quantitative Performance Analysis of Large-Scale SFQ Digital Systems

Physica C 392-396 1467 - 1471 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Implementation and Low Speed Test of Ultra-Fast Interface Circuits for Josephson-CMOS Hybrid Memories

Physica C 392-396 1495 - 1500 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Component test toward single-flux-quantum processors

Physica C 392-396 1490 - 1494 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

High-speed testing of tandem-Banyan network switch component

Physica C 392-396 1485 - 1489 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Single flux quantum circuit technology innovation for backbone router applications

Physica C 392-396 1478 - 1484 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and implementation of a high-speed bit-serial SFQ adder based on the binary decision diagram

Supercond. Sci. Technol 16 1497 - 1502 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and high-speed test of 4 x 8-bit SFQ shift register files

Supercond. Sci. Technol 16 1456 - 1459 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of the speedup buffer for the single-flux-quantum network switch

Supercond. Sci. Technol 16 1452 - 1455 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Prototypic design of the single-flux-quantum microprocessor, CORE1

Supercond. Sci. Technol 16 1460 - 1463 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

A new design approach based on a multi-wiring-layer process for high-density SFQ circuits

Supercond. Sci. Technol 16 1464 - 1469 2003 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of a Tiny Microprocessor Based on the Single-Flux-Quantum Circuit Technology

Extended Abstracts of the 2002 International conference on Solid State Devices and Materials 244 - 245 2002.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

High-End Server Based on Complexity-Reduced Architecture for Superconductor Technology

IEICE Transactions on Electronics E85-C ( 3 ) 612 - 616 2002 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design of small RSFQ Microprocessor based on Cell-Based Top-Down Design Methodology

F. Matsuzaki, K. Yoda, J. Koshiyama, K. Motoori and N. Yoshikawa

IEICE Transactions on Electronics E85-C ( 3 ) 659 - 664 2002 [Reviewed]

Web of Science

Language：English Publishing type：Research paper (scientific journal) Publisher：IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG Joint Work

Cell-Based Design Methodology for BDD RSFQ Logic Circuits -Tolerance of Basic Cells to Circuit Parameter Variations

Supercond. Sci. Technol 15 156 - 160 2002 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Engineering issues in high-frequency RSFQ circuits

Physica C 372-376 1 - 6 2002 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Component Test of a 1-bit RSFQ Microprocessor

Physica C 378-381 1454 - 1460 2002 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Design and Component Test of RSFQ Packet Decoders for Shift Register Memories

Physica C 378-381 1475 - 1480 2002 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

A Resistively-Coupled-Cell-Based Design Approach for RSFQ Logic Circuits

Extended Abstract of 8th International Superconductive Electronics Conference (ISEC'01) 465 - 466 2001.6

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Josephson-CMOS Hybrid Memory Using Three-Transistor DRAM Cell

Extended Abstract of 8th International Superconductive Electronics Conference (ISEC'01) 29 - 30 2001.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Cell-Based Design Methodology based on BDD RSFQ Logic Circuits - Tolerance of Basic Cells to Circuit Parameter Variations -

Extended Abstract of 8th International Superconductive Electronics Conference (ISEC'01) 167 - 168 2001.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

High-End Server Based on Supercnductor Technology

Extended Abstract of 8th International Superconductive Electronics Conference (ISEC'01) 181 - 182 2001.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Resistively Coupled Multi-Flux-Quantum Logic

Extended Abstract of 8th International Superconductive Electronics Conference (ISEC'01) 305 - 306 2001.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Cell-based top-down design methodology for RSFQ digital circuits

Physica C 357-360 1529 - 1539 2001 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Cell-Based Design Methodology based on BDD RSFQ Logic Circuits - Tolerance of Basic Cells to Circuit Parameter Variations -

Extended Abstract of 8th International Superconductive Electronics Conference (ISEC'01) 167 - 168 2001 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Top-Down RSFQ Logic Design Based on a Binary Decision Diagram

IEEE Trans. Appl. Superconductivity 11 1098 - 1101 2001

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

A Cell-Based Design Approach for RSFQ Circuits Based on Binary Decision Diagram

IEEE Trans. Appl. Superconductivity 11 263 - 266 2001

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Component Development for a 16 Gb/s RSFQ-CMOS Interface System

IEEE Trans. Appl. Superconductivity 11 735 - 738 2001

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Design and Test of RSFQ High-Speed Packet Switches

Extended Abstract of 8th International Superconductive Electronics Conference (ISEC'01) 163 - 164 2001 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Design of small RSFQ Microprocessor based on Cell-Based Top-Down Design Methodology

Extended Abstract of 8th International Superconductive Electronics Conference (ISEC'01) 165 - 166 2001 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Monte-Carlo Simulation of Logic Circuits Using the Resistively Coupled Single-Electron Transistor

Abstract of 2000 International Symposium on Formation, Physics and Device Application of Quantum Dot Structures 128 2000

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Study on Cell Based Design Methodology of RSFQ Logic Circuits

IEICE Transactions C J83-C ( 7 ) 636 - 642 2000

Language：Japanese Publishing type：Research paper (other science council materials etc.) Single Work

Study on Timing Design Methodology of RSFQ Logic Circuit using Verilog HDL

IEICE Transactions C J83-C ( 7 ) 643 - 650 2000

Language：Japanese Publishing type：Research paper (other science council materials etc.) Single Work

大規模SFQ論理回路設計技術の課題と展望

応用物理学会超伝導分科会第21回研究会 2000

Language：Japanese Publishing type：Research paper (other science council materials etc.) Single Work

超伝導回路の最適化手法の研究動向-ベンチマークテストによる最適化ツールの評価-

電気学会東京支部連合研究会 MC-00-11 53 - 58 2000

Language：Japanese Publishing type：Research paper (other science council materials etc.) Single Work

低温電子工学技術動向

電気学会技術報告書 783 2000

Language：Japanese Publishing type：Research paper (other science council materials etc.) Single Work

Parameter Optimization of Single Flux Quantum Digital Circuits Based on Monte Carlo Yield Analysis

IEICE Transactions on Electronics E83-C ( 1 ) 75 - 80 2000

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Reduction of Power Consumption of RSFQ Circuits by Inductance-Load-Biasing

Superconductor Science and Technology 12 782 - 785 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Single Electron Transfer Logic Gate Family

Jpn. J. Appl. Phys. 38 433 - 438 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Plasma activated pulsed laser deposition for synthesis of particle-free La_2-xSr_xCuO₄ Films

Thin Solid Films 20 - 23 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

A New Design Approach for RSFQ Logic circuits Based on the Binary Decision Diagram

IEEE Trans. Appl. Superconductivity 9 3161 - 3164 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Simulation and 18 Gb/s Testing of a Data-Driven Self-Timed RSFQ Demultiplexer

IEEE Trans. Appl. Superconductivity 9 4349 - 4352 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

20 GHz RSFQ Multiplexer and Demultiplexer

IEEE Trans. Appl. Superconductivity 9 3310 - 3313 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Self-Timing and Vector Processing in RSFQ Digital Circuit Technology

IEEE Trans. Appl. Superconductivity 9 7 - 17 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

A Cell-Based Design Apploach for RSFQ Circuits using Binary Decision Diagram

Extended Abstract of International Superconductive Electronics Conference(ISEC'99) 100 - 102 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Reduction of Power Consumption of RSFQ Circuits by Inductance-Load-Biasing

Extended Abstract of International Superconductive Electronics Conference(ISEC'99) 339 - 341 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Parameter Optimization of Single Flux Quantum Digital Circuits Based on Monte Carlo Yield Analysis

Extended Abstract of International Superconductive Electronics Conference(ISEC'99) 342 - 344 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Component Development for a 16 Gb/s Digital Superconducting Ring Data Bus

Extende Abstract of International Superconductive Electronics Conference(ISEC'99) 45 - 47 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

A Cell-Based Design Approach for RSFQ Circuits using Binary Decision Diagram

Superconductor Science and Technology 12 918 - 920 1999

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Single-Flus-Quantum Railroads : Component Development for a 64 Gb/s Digital Superconducting Ring Data Bus

Abstract of 1998 Applied Superconductivity Conference(ASC98) 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Design Considerations of Data-Driven Self-Timed RSFQ Adder Circuits

IEICE Transactions on Electronics E81-C 1618 - 1626 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Design and Testing of Data-Driven Self-Timed RSFQ Demultiplexer

Applied Superconductivity 6 361 - 365 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Memory-Processor Interface with Hybrid CMOS-RSFQ Technology

Applied Superconductivity 6 355 - 360 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Asynchronous circuits and systems in superconducting RSFQ technology

Proceeding of Fourth International Symposium on Advanced Research in Asynchronous Circuits and Systems(ASYNC 98) 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Single Electron Transfer Logic Gate Family

Abstracts of 1998 International Symposium on Formation, Physics and Device Application of Quantum Dot Structures(QDS'98) 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Design Approach to RSFQ Logic Circuits Based on the Binary Decision Diagram

Abstract of 1998 Applies Superconductivity Conference(ASC98) 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Design of Date-Driven Self-Timed RSFQ Vector Adder

Abstract of 1998 Applied Superconductivity Conference(ASC98) 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Data-Driven Self-Timed RSFQ Demultiplexer

Abstract 1998 Applied Superconductivity Conference(ASC98) 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantum Interference Found in Lanthanum(2-x)Strontium(x)Copper(1)Oxygen(4)HTS Film Irradiated by 30 THz Laser Light at Room Temperature

Abstract of 1998 Applied Superconductivity Conference(ASC98) 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

20 GHz RSFQ Multiplexer and Demultiplexer

Abstract of 1998 Applied Superconductivity Conference(ASC98) 1998

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantum Interference in LaSrCuO Film Irradiated by 30 THz Laser Light at Room Temperature

1997 International Confrerence on Solid State devices and Materials(SSDM'97) 250 - 251 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Data-Driven Self-Timed RSFQ Digital Integrated Circuit and System

IEEE Trans. on Appl. Superconductivity 7 3634 - 3637 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Single-Electron-Tunneling Effect in Nanoscale Granular Microbridge

Jpn. J. Appl. Phys. 36 4161 - 4165 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Data-Driven Self-Timed RSFQ High Speed Test System

IEEE Trans. Appl. Superconductivity 7 3830 - 3833 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

20 Gb/s Self-Timed Vector Processing with Josephson Single Flux Quantum Technology

Technical Digest, 1997 International Solid-State Circuit Conference(ISSCC'97) 128 - 129 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Design and Testing of Data-Driven Self-Timed RSFQ Shift Register

Extended Abstract of International Superconductive Electronics Conference(ISEC'97) 382 - 384 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Design and Testing of Data-Driven Self-Timed RSFQ Demultiplexer

Extended Abstract of International Superconductive Electronics Conference(ISEC'97) 353 - 355 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Memory-Processor Interface with Hybrid CMOS-RSFQ Technology

Extended Abstract of International Superconductive Electronics Conference(ISEC'97) 347 - 349 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Asynchronous Design Methodology for RSFQ Digital System

Extended Abstract of International Superconductive Electronics Conference(ISEC'97) 332 - 334 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Oxygen Presure Dependence of Morphology of La2-xSrxCuO4 Ultra-Thin Films

Modern Physics Letters B 11 981 - 987 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantum Field Effect of c-Axis Oriented La_2-xSr_xCuO₄((]G0001[)) : Similarity of Carier State to 2D Electron System in Fractional Quantum Hall Effect

Extended Abstract of the 1997 International Workshop on Superconductivity, Co-Sponsered by ISTEC and MRS 377 - 378 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantum Field Effect of c-Axis Oriented La_2-xSr_xCuO₄((]G0002[)) : Existence of Reverse Electric Field

Extended Abstract of the 1997 International Workshop on Superconductivity, Co-Sponsered by ISTEC and MRS 379 - 380 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Macroscopic Interference Effect in LaSrCuO Film Irradiated by 30 THz Laser Light at Room Temperature

Extended Abstract of International Superconductive Electronics Conference(ISEC'97) 230 - 332 1997

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Anomalous electric characteristic of La_2-xSr_xCuO₄ at x=1/4DAn(/)DA

Proceeding of 21st International Conference on Low Temperature Physics 1165 - 1166 1996

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Study of electrical conduction properties of NbN thin films using NbN/MgO/NbN double tunnel junctions

Supercond. Sci. Technol. 9 A152 - A155 1996

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Complementary Digital Logic Using Resistively Coupled Single Electron Transistor

Jpn. J. Appl. Phys. 35 1140 - 1145 1996

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Anomalous Effect in La_2-xSr_xCuO₄ of Doping Level x=1/4ⁿ

Jpn. J. Appl. Phys. 35 793 - 795 1996

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Single-Electron-Tunneling Effect in Nanoscale Granular Microbridge

Abstracts of 1996 International Symposium on Formation, Physics and Device Application of Quantum Dot Structures(QDS'96) 1996

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Study of Electron Conduction Properties of NbN thin Flms Using NbN/MgO/NbN Double Junction

Extended Abstracts of 5th International Superconductive Electronics Conference(ISEC'95) 450 - 452 1995

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

La2-xSrxCuO4の抵抗率と移動度のSrドープ量依存性

電気学会論文誌A 115 534 - 539 1995

Language：Japanese Publishing type：Research paper (other science council materials etc.) Single Work

Dynamic Characteristics of Inverter Circuits Using Single Electron Transistor

Japanese Journal of Applied Physics 34 1332 - 1338 1995

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Electrical Field Effect in Highly Resistive NbN Microbridge

IEEETrans. on Applied Superconductivity 5 3090 - 3093 1995

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Fabrication of Pd Nanostructures with Scanning Tunneling Microscope

Jpn. J. Appl. Phys. 34 L1221 - L1223 1995

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Coulomb blockade and electrical field effect in nanoscale granular microbridges

Appl. Phys. Lett. 67 3969 - 3971 1995

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Complementary Digital Logic Using Resistively Coupled Single Electron Transistor

Extended Abstract of 1995 International Conference on Solid State Devices and Materials 204 - 206 1995

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Anomalous Effect in La_2-xSr_xCuO₄ on Doping Level x=1/4DAn(/)DA

Extended Abstract of 1994 International Conference on Solid State Devices and Materials 749 - 751 1995

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Electrical Field Effect in Microbridges Made of NbN Granular Thin Films

Extended Abstracts of 5th International Superconductive Electronics Conference(ISEC'95) 213 - 215 1995

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Conduction Anomaly in High-Temperature Superconductor

Extended Abstracts of 5th International Superconductive Electronics Conference(ISEC'95) 447 - 449 1995

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Anomalous Behavior of Resistivity and Mobility of La_2-xSr_xCuO₄ Bulk Materials and Films

Extended Abstract of 1994 International Conference on Solid State Devices and Materials 586 - 588 1994

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Influence of inhomogeneity on correlated single-electron tunneling in one-dimensional array of small tunnel junctions

Physica B 194-196 1309 - 1310 1994

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Observation of Single-electron Charging Effect in NbN Submicron Bridges

Physica B 194-196 1677 - 1678 1994

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Electrical Field Effect of BiSrCaCuO Granular Thin Films

Extended Abstracts of HTSED Workshop '94 by FED 154 - 155 1994

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Dynamic Characteristics of Inverter Circuits Using Single Electron Transistor

Extended Abstract of 1994 International Conference on Solid State Devices and Materials 334 - 336 1994

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Charge Quantization Effect in BiSrCaCuO Granular Thin Films

Extended Abstracts of 4th International Superconductive Electronics Conference(ISEC'93) 402 - 403 1993

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Measurement of Conduction Properties of Highly Resistive Superconducting Microbridges

IEEE Transactions on Applied Superconductivity 3 1991 - 1994 1993

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Sub-Micron Field-Effect Transistor Using Granular NbN Thin Film

IEEE Transactions on Applied Superconductivity 3 1987 - 1990 1993

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Fabrication and Characterization of HTS/Semiconductor Tree Terminal Device

IEEE Transactions on Applied Superconductivity 3 1957 - 1960 1993

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Flux and Charge Quanta in Junctions and Macroscopic Quantum Effect

Japanese Journal of Applied Physics 32 681 - 684 1993

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Observation of Single-Electron Charging Effect in BiSrCaCuO Granular Thin Film

Japanese Journal of Applied Physics 32 L1516 - L1519 1993

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Feasibility of Room-temperature-operating Field-effect Transistor Using Channel Made of High Temperature Superconductor

Extended Abstracts of 4th International Superconductive Electronics Conference(ISEC'93) 406 - 407 1993

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

New Frontier in Superconducting Devices

Extended Abstracts of the 1992 International Conference on Solid State Devices and Materials 713 - 715 1992

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

BSCCO/Te半導体接合を用いた三端子素子の作製

電気学会論文誌C 112 705 - 710 1992

Language：Japanese Publishing type：Research paper (other science council materials etc.) Single Work

超伝導エレクトロニクス/基礎とマイクロ波応用

J.H.ヒンケン著、菅野卓雄監訳、菅原昌敬、鳳紘一郎、君嶋義英、吉川信行訳、シュプリンガー・フェアラーク東京(株)、 1992

Language：Japanese Publishing type：Research paper (other science council materials etc.) Single Work

Quantum Fluctuation and Disappearance of the Josephson Effect in Highly Resistive Microbridges

Single-Electron Tunneling and Mesoscopic Device, Springer-Verlag 31 269 - 272 1992

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Multi-bit Memory Effect in Highly Resistive Granular superconductor films

Supercond. Sci. Technol. 5 111 - 114 1992

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantum Phase Fluctuation and Conduction Properties of Highly Resistive Superconducting Weak Link

Advances in Superconductivity Springer-Verlag 4 97 - 100 1992

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Study of the Physical Properties of High-Temperature Oxide Superconductors Based on Superfluidity Models

Japanese Journal of Applied Physics 31 L604 - L607 1992

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

The Basic Study of HTS/Semiconductor Hybrid Device

Advances in Superconductivity IV, Springer-Verlag 979 - 982 1992

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Dual Macroscopic Quantum Effects in Tunnel-Type and Bridge-Type Junctions

Single-Electron Tunneling and Mesoscopic Devices, Springer-Verlag 31 263 - 267 1992

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Printing-In Effect in NbN Granular Thin Films Caused by Electric Field

Single-Electron Tunneling and Mesoscopic Devices, Springer-Verlag 31 273 - 278 1992

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Proximity Effect in the SN Interface of High-Tc Superconductors

IEEE Transactions on Magnetics MAG-27 1328 - 1331 1991

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Parameter Limit of the Josephson Effect in Small Superconducting Microbridges

IEEE Transactions on Magnetics MAG-27 3272 - 3275 1991

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Experimental Study of a Field-Effect Transistor Using Granular Thin Film

IEEE Transactions on Magnetics MAG-27 3268 - 3271 1991

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

New FET Using the Superconducting Phase Transition of a High Temperature Oxide Superconductor

Supercond. Sci. Technol. 4 468 - 470 1991

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Structure-Parameter Dependence of Modality of Macroscopic Quantum Effect in Superconductor Junction. (II)-Linked Junction-

Japanese Journal of Applied Physics 30 263 - 273 1991

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Prospect of Charge-Quantum Field-Effect Transistor Using Superconductor

Extended Abstracts of 9th Symposium on Future Electron Devices, R&D Association for Future Electron Devices 59 - 64 1990

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantized Electrostatic Field Effects in Disordered Two-Dimensional Systems of Superconducting Small Particles

Physica B 165 961 - 962 1990

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantized Electrical Field Effects in Granular Superconductor Thin Films

YOSHIKAWA, N; MURAKAMI, T; SUGAHARA, M

Japanese Journal of Applied Physics 29 ( 6 ) 1086 - 1096 1990

DOI Web of Science

Language：English Publishing type：Research paper (other science council materials etc.) Publisher：JAPAN J APPLIED PHYSICS Single Work

Gappless Characteristics of Superconductivity in Surface Layer of HTSC

Advances in Superconductivity II, Springer-Verlag 1009 - 1012 1990

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Charge and Flux Fluctuation and New Macroscopic Quantum Effect in Weakly Linked Superconductor Junctions

Physica B 165,166 166/,937 - 938 1990

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Basis of the Technology for HTSC Three Terminal Devices, -HTSC Surface and Proximity Effect-

Extended Abstract of 8th Symposium on Future Electron Devices, R&D Association for Future Electron Devices 247 - 253 1989

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

The Circuits of Phase-Quantum-Tunneling Device

IEEE Transactions on Magnetics MAG-25 1286 - 1289 1989

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Experiment of Field-Effect Transistor with a Channel Made of NbN Grnaular Thin Film

IEEE Transactions on Magnetics MAG-25 1270 - 1273 1989

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Structure-Parameter Dependence of Modality of macroscopic Quantum Effect in Superconductor Junction. (I)-Tunnel Type Junction-

Japanese Journal of Applied Physics 28 1816 - 1824 1989

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Structural Parameter Dependence of the Quantum Behavior of Small Superconductor Junctions

Advances in Superconductivity Springer-Verlag 749 - 754 1989

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Review of Superconducting Three-Terminal Device

Proceeding of 2nd Workshop on High-Temperature Superconducting Electron Devices, R&D Association for Future Electron Devices 399 - 408 1989

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Coherence and Macroscopic Quantum Effect in Small Superconductor Junctions

Extended Abstracts of 1989 International Superconductivity Electronics Conference(ISEC'89) 350 - 354 1989

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantized Field Effect in NbN-BN Granular Thin Film

Extended Abstracts of 1989 International Superconductivity Electronics Conference(ISEC'89) 298 - 301 1989

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Conduction Properties and Electronic Field Effect of Granular Thin Films of Bi-Sr-Ca-Cu-O

Extended Abstracts of 1989 International Superconductivity Electronics Conference(ISEC'89) 334 - 337 1989

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

New Effect in Small Superconductor Junctions and Its Applications

Proceeding of World Congress on Superconductivity World Scientific Publishing Co. Pte. Ltd. 197 - 222 1988

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Structure and Parameters of Phase-Quantum-Tunnel Junction

Extended Abstract of 1987 International Superconductivity Electronics Conference(ISEC'87) 341 - 344 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Field-Effect Induced Sinusoidal Conductivity Variation of NbN Granular Thin Film

Japanese Journal of Applied Physics 26 L1701 - L1702 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Sheet-Resistance Dependence of Electric Properties of NbN Granular Thin Film

Advances in Cryogenic Engineering Materials 34 739 - 748 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantization of Dielectric Flux in Phase-Quantum-Tunnel Junction

IEEE Transactions on Magnetics MAG-23 1130 - 1133 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Possibility of Dual Macroscopic Quantum Phenomena in 2D Superconductor Granular System

Japanese Journal of Applied Physics 26 1411 - 1412 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Dual Conduction Characteristics Observed in Highly Resistive NbN Thin Films

Japanese Journal of Applied Physics 26 949 - 950 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Quantized Current-Step Structure Observed in RF-Irradiated Microbridge Made of NbN Granular Thin Film

Japanese Journal of Applied Physics 26 1625 - 1626 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Possibility of Kosterlitz-Thouless Effect at the Resistive Transition of High Tc Oxide Superconductors

Physics Letters A125 429 - 431 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Discontinuity of Magnetic Flux Trapped in Multiply Connected Superconductor

Prog. Theor. Phys. 78 957 - 962 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Basic Study on Superconductor Device Using Quantized Charge Solitons

Extended Abstract of 1987 International Superconductivity Electronics Conference(ISEC'87) 178 - 181 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Basic Study on Quantum Standard of Electric Current

Extended Abstract of 1987 International Superconductivity Electronics Conference(ISEC'87) 186 - 187 1987

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Experiment on Phase-Quantum-Tunneling Device

J. Phys. Soc. Jpn. 54 3051 - 3060 1985

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Phase-Quantum-Tunnel Device

IEEE Trans. Magn MAG-21 935 - 938 1985

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

Macroscopic Quantum Effect Conjugate to Josephson Effect

J. Phys. Soc. Jpn. 53 3146 - 3152 1984

Language：English Publishing type：Research paper (other science council materials etc.) Single Work

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<YOSHIKAWA Nobuyuki>

Papers - YOSHIKAWA Nobuyuki