YOSHIKAWA Nobuyuki

Affiliation

Institute of Advanced Sciences

Job Title

Professor

Date of Birth

1961

Research Fields, Keywords

Superconductivity Electronics, Design of Integrated Circuits, Quantum Computing, Electronic Devices

Mail Address

E-mail address

Web Site

http://www.yoshilab.dnj.ynu.ac.jp/yoshilab_hp/index_english.html

Related SDGs




写真a

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The Best Research Achievement in Research Career 【 display / non-display 】

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The Best Research Achievement in the last 5 years 【 display / non-display 】

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Graduating School 【 display / non-display 】

  • 　
    -
    1984

    Yokohama National University   Faculty of Engineering   Graduated

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Graduate School 【 display / non-display 】

  • 　
    -
    1989

    Yokohama National University  Graduate School, Division of Engineering    Completed

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Degree 【 display / non-display 】

  • Doctor of Engineering -  Yokohama National University

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Campus Career 【 display / non-display 】

  • 2021.04
    -
    Now

    Duty   Yokohama National UniversityInstitute of Advanced Sciences   Professor  

  • 2004.04
    -
    2021.03

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Intelligent Systems Engineering   Professor  

  • 2001.04
    -
    2004.03

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Intelligent Systems Engineering   Associate Professor  

  • 1993.04
    -
    2001.03

    Duty   Yokohama National UniversitySchool of Engineering   Associate Professor  

  • 1991.04
    -
    1993.03

    Duty   Yokohama National UniversitySchool of Engineering   Lecturer  

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Academic Society Affiliations 【 display / non-display 】

  • 2014.05
    　
    　
     

    Institute of Electrical Engineering of Japan

  • 　
    　
    　
     

    IEEE

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Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display 】

  • Electron device/Electronic equipment

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Research Career 【 display / non-display 】

  • Study on single-flux-quantum logic circuits

    JST Basic Research Programs (Core Research for Evolutional Science and Technology :CREST)  

    Project Year：  -   

    　View Summary

    The purpose of the study is to realize ultra low-power, high-speed digital integrated circuits using single-flux-quantum circuits.

  • Study on ultra low-power integrated circuits using adiabatic mode circuits

    Grant-in-Aid for Scientific Research  

    Project Year：  -   

    　View Summary

    The purpose of the study is to realize ultra-low-power integrated circuits using adiabatic-mode circuits, including adiabatic single-flux-quantum circuits and CMOS circuits.

  • Study on low-temperature CMOS integrated circuits

    International Collaboration  

    Project Year：  -   

    　View Summary

    The purpose of the study is to realize high-speed integrated circuits using low-temperature CMOS devices.

  • Study on Josephson qubits

    JST Basic Research Programs (Core Research for Evolutional Science and Technology :CREST)  

    Project Year：  -   

    　View Summary

    The purpose of the study is to realize phase qubits using Josephson junctions. Single-flux-quantum circuits will be used to control Josephson qubits.

  • Single electronics

    Grant-in-Aid for Scientific Research  

    Project Year：  -   

    　View Summary

    The purpose of the study is to realize ultra-low-power, high-density integrated circuits using single-electron tunneling effects.

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Books 【 display / non-display 】

  • Fundamentals and Frontiers of the Josephson Effect

    Editor: Francesco Tafuri (Part： Single Work , Range: 16.6 Adiabatic flux Quantum Parametron Logic )

    Springer  2019.09 ISBN: 0933-033X

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Papers 【 display / non-display 】

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

    Akiyoshi Sanada, Yuki Yamanashi, Nobuyuki Yoshikawa

    IEEE Transactions on Applied Superconductivity ( IEEE )  Vol.29 ( 5 )   1301904 - 1301904   2019.03  [Refereed]

    Joint Work

    DOI

  • 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 ( IEEE )  Vol.29 ( 5 )   1302905 - 1302905   2019.03  [Refereed]

    Joint Work

    　View Summary

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

    DOI

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

    Yukihiro Okuma, Naoki Takeuchi, Yuki Yamanashi, Nobuyuki Yoshikawa

    Superconductor Science and Technology ( IOP Science )  Vol.32 ( 6 )   065007 - 065007   2019.05  [Refereed]

    Joint Work

    DOI

  • Superconductor Amoeba-Inspired Problem Solvers for Combinatorial Optimization

    Naoki Takeuchi, Masashi Aono, Nobuyuki Yoshikawa

    PHYSICAL REVIEW APPLIED ( APS Physics )  Vol.11 ( 4 )   044069 - 044069   2019.04  [Refereed]

    Joint Work

    DOI

  • 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 ( Springer Nature Limited )  Vol.9   10514 - 10514   2019.07  [Refereed]

    Joint Work

    DOI

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Review Papers 【 display / non-display 】

  • Trends in Low-Temperature Circuit Technology to Control Quantum Bits for Large-Scale Quantum Computers

    Yoshikawa Nobuyuki

    IEEJ Transactions on Fundamentals and Materials ( The Institute of Electrical Engineers of Japan )  141 ( 1 ) 20 - 21   2021  [Refereed]  [Invited]

    Introduction and explanation (scientific journal)   Single Work

    　View Summary

    <p>Recently the number of integrated superconductor qubits and the fidelity in the qubit control are rapidly advanced. Besides the quantum supremacy, which is a remarkable milestone for realizing a large-scale quantum computer, was verified. However, for further increase in the scale of the quantum computer, control circuits to manipulate and read out the qubit state at low temperatures are indispensable to reduce the number of wires connecting the qubits at low temperatures with electronics at room temperature. In this report, recent research activities on qubit control circuits operating at low temperatures are reviewed.</p>

    DOI CiNii

  • Special Section on Innovative Superconducting Devices Based on New Physical Phenomena FOREWORD

    Yoshikawa Nobuyuki

    IEICE TRANSACTIONS ON ELECTRONICS   E101C ( 5 ) 351 - 351   2018.05  [Refereed]  [Invited]

    Introduction and explanation (scientific journal)   Single Work

    Web of Science

  • Toward the Creation of Future Technologies based on Superconductivity Electronics

    Yoshikawa Nobuyuki

    IEEJ Transactions on Fundamentals and Materials ( The Institute of Electrical Engineers of Japan )  138 ( 1 ) 25 - 27   2018  [Refereed]  [Invited]

    Introduction and explanation (scientific journal)   Single Work

    　View Summary

    <p>In this paper we will review future technologies based on superconducting electronics, which include quantum computers, high-performance general-purpose computers, quantum communications, biomagnetic measurements, drug delivery, geological exploration, radio astronomy, and so on. We will briefly show the present status and future trends of researches in these cutting-edge research areas.</p>

    DOI CiNii

  • FOREWORD

    YOSHIKAWA Nobuyuki

    IEICE Transactions on Electronics ( 一般社団法人 電子情報通信学会 )  101 ( 5 ) 351 - 351   2018

    Introduction and explanation (scientific journal)   Single Work

    DOI CiNii

  • 位相エンジニアリングの研究動向と新展開

    吉川信行

    電気学会論文誌A（基礎・材料・共通部門誌） ( 一般社団法人　電気学会 )  137 ( 1 ) 23 - 25   2017.01

    Introduction and explanation (bulletin of university, research institution)   Single Work

    DOI

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • Grant-in-Aid for Scientific Research(S)

    Project Year： 2019.06  -  2024.03 

  • Grant-in-Aid for Scientific Research(A)

    Project Year： 2019.04  -  2023.03  Investigator(s): NOBUYUKI YOSHIKAWA

  • Study on Adiabatic Single-Flux-Quantum Circuits Operating in the Thermodynamic Energy Limit

    Grant-in-Aid for Scientific Research(S)

    Project Year： 2014.04  -  2019.03  Investigator(s): Nobuyuki Yoshikawa

  • Study on sub-μW microprocessors using adiabatic-mode single-flux-quantum circuits

    Grant-in-Aid for Scientific Research(S)

    Project Year： 2010.06  -  2015.03  Investigator(s): Nobuyuki Yoshikawa

  • Grant-in-Aid for challenging Exploratory Research

    Project Year： 2013.04  -  2015.03  Investigator(s): Nobuyuki Yoshikawa

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Presentations 【 display / non-display 】

  • Library design and design tools for adiabatic quantum-flux-parametron logic circuits (ac-biased SFQ logic)

    N. Yoshikawa  [Invited]

    Design, Automation and Test in Europe (DATE 2019)  (Florence, Italy)  2019.03.25  

    　View Summary

    N. Yoshikawa, “Passive transmission lines matching and layout, " Design, Automation and Test in Europe (DATE 2019), Florence, Italy, Mar. 25-29, 2019, D5L3(Tutorial Lecture).

  • Thin-film basics and device manufacture

    N. Yoshikawa  [Invited]

    South African Superconducting Quantum electronic circuit design tools and Analysis workshop (SASQIA 2019)  (Hermanus, Cape Town)  2019.03.03  

    　View Summary

    N. Yoshikawa, “Thin-film basics and device manufacture, " South African Superconducting Quantum electronic circuit design tools and Analysis workshop (SASQIA 2019), Hermanus, Cape Town, Mar. 3-8, 2019, D1L3(Tutorial Lecture).

  • Passive transmission lines matching and layout

    N. Yoshikawa  [Invited]

    South African Superconducting Quantum electronic circuit design tools and Analysis workshop (SASQIA 2019)  (Cape Town, South Africa)  2019.03.03  

    　View Summary

    N. Yoshikawa, “Passive transmission lines matching and layout, " South African Superconducting Quantum electronic circuit design tools and Analysis workshop (SASQIA 2019), Cape Town, South Africa, Mar. 3-8, 2019, D5L3(Tutorial Lecture).

  • Development of an extremely energy-efficient AQFP microprocessor

    C. Ayala, Olivia Chen, R. Saito, T. Tanaka, N. Takeuchi, Y. Yamanashi, N. Yoshikawa  [Invited]

    The 31st International Symposium on Superconductivity (ISS2018)  (Ibaraki, Japan)  2018.12.12  

    　View Summary

    C. Ayala, Olivia Chen, R. Saito, T. Tanaka, N. Takeuchi, Y. Yamanashi, N. Yoshikawa, “Development of an extremely energy-efficient AQFP microprocessor, " The 31st International Symposium on Superconductivity (ISS2018), Ibaraki, Japan, Dec. 12-14, 2018, ED5-2-INV(招待発表).

  • High-speed and Low-power signal processing using superconducting circuits

    N. Yoshikawa  [Invited]

    Workshop on the future of silicon detector technologies FuTuRe II  (Erfurt, Germany)  2018.12.02  

    　View Summary

    N. Yoshikawa, “High-speed and Low-power signal processing using superconducting circuits," Workshop on the future of silicon detector technologies FuTuRe II, Erfurt, Germany, December 2-4, 2018(招待発表)

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Preferred joint research theme 【 display / non-display 】

  • Research on High-Speed Integrated Circuits using Single Flux Quantum Logic Circuits

  • Research on Low Power CMOS Integrated Circuits

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Past of Collaboration and Commissioned Research 【 display / non-display 】

  • Research on Josephson/CMOS Hybrid Memories

    International Cooperative Research  

    Project Year： 2001  -  2001 

  • Research on Superconductor/Semiconductor Hybrid Circuits

    Cooperative Research within Japan  

    Project Year： 2000  -  2001 

  • Research on Design Methodologies of Single Flux Quantum Integrated Circuits

    Funded Research on Investiment  

    Project Year： 2000  -  2001 

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Council/Academic activity outside the university 【 display / non-display 】

  • Board Members of Applied Superconductivity Conference

    2016.10
    -
    2022.09

    Society   Board Members of Applied Superconductivity Conference

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Social Contribution(Extension lecture) 【 display / non-display 】

  • 13th Superconducting SFQ VLSI Workshop (SSV 2020)

    13th Superconducting SFQ VLSI Workshop   （Yokohama Port Opening Memorial Hall, Yokohama） 

    2020.01
    　
    　

    　View Summary

    The workshop aims at providing an opportunity to discuss key aspects of superconductor VLSI technologies. Latest results related to device fabrication, circuit design, function testing, and system integration will be exchanged.

  • 2020 International Symposium on Superconductor Electronics

    146th Committee on Superconductive Electronics, JSPS  （Yokohama Port Opening Memorial Hall, Yokohama） 

    2020.01
    　
    　

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