YOSHIKAWA Nobuyuki

Affiliation

Institute of Advanced Sciences

Job Title

Professor

Date of Birth

1961

Research Fields, Keywords

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

Mail Address

E-mail address

Web Site

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

Related SDGs




写真a

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

Education 【 display / non-display

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    1989

    Yokohama National University   Completed

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    1984

    Yokohama National University   Graduated

Degree 【 display / non-display

  • Doctor of Engineering - Yokohama National University

Campus Career 【 display / non-display

  • 2021.4
     
     

    Duty   Yokohama National UniversityInstitute of Advanced Sciences   Professor  

  • 2004.4
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    2021.3

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

  • 2001.4
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    2004.3

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

  • 1993.4
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    2001.3

    Duty   Yokohama National UniversitySchool of Engineering   Associate Professor  

  • 1991.4
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    1993.3

    Duty   Yokohama National UniversitySchool of Engineering   Lecturer  

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External Career 【 display / non-display

  • 1995.2
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    1995.12

     

Academic Society Affiliations 【 display / non-display

  • 2018.5
     
     
     

    日本学術振興会第146超電導エレクトロニクス委員会

  • 2016.4
     
     
     

    低温・超電導学会

  • 2014.5
     
     
     

    Institute of Electrical Engineering of Japan

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    応用物理学会

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    電子情報通信学会

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Research Areas 【 display / non-display

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment

 

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:

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    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:

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    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:

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    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:

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    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:

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

Books 【 display / non-display

  • Fundamentals and Frontiers of the Josephson Effect

    Editor: Francesco Tafuri( Role: Sole author ,  16.6 Adiabatic flux Quantum Parametron Logic)

    Springer 

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    Total pages:859   Responsible for pages:12   Language:English Book type:Scholarly book

Thesis for a degree 【 display / non-display

  • 微小超伝導接合における新しい量子効果とその応用

    吉川 信行

    1989.3

    Doctoral Thesis   Single Work  

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    横浜国立大学
    超伝導微小トンネル接合において生じる巨視的量子効果の研究を行った。これらの系においてジョセフソン効果と双対な巨視的量子効果が存在することを理論的に予測し、微粒子超伝導体薄膜を用いた実験によりこれらの効果の存在を実証した。

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   Vol.29 ( 5 )   1301904 - 1301904   2019.3  [Reviewed]

    DOI

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    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

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    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

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    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

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    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

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

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Review Papers 【 display / non-display

  • 「量子コンピュータ周辺回路としての低温デジタル回路」研究開発の動向と最前線

    吉川信行

    電気学会論文誌A(基礎・材料・共通部門誌)   143 ( 1 )   19 - 20   2023.1  [Reviewed]  [Invited]

    DOI

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Single Work  

  • 超低電力コンピューティングのための断熱磁束量子パラメトロンのパラメータ設計法

    竹内尚輝、山栄大樹、鈴木秀雄、吉川信行

    電子情報通信学会論文誌C   J105-C ( 11 )   329 - 338   2022.11  [Reviewed]  [Invited]

    DOI

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    Authorship:Last author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Single Work  

  • Adiabatic Quantum-Flux-Parametron: A Tutorial Review

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

    IEICE Transactions on Electronics   E105.C ( 6 )   251 - 263   2022.6  [Reviewed]  [Invited]

    DOI CiNii Research

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    Authorship:Last author   Language:English   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher:一般社団法人 電子情報通信学会   Joint Work  

    <p>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.</p>

  • Research Trends on Low-power, High-performance Superconducting Computer Technology

    Yoshikawa Nobuyuki

    IEEJ Transactions on Fundamentals and Materials   142 ( 1 )   19 - 20   2022.1  [Reviewed]  [Invited]

    DOI CiNii Research

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:The Institute of Electrical Engineers of Japan   Single Work  

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

    Yoshikawa Nobuyuki

    IEEJ Transactions on Fundamentals and Materials   141 ( 1 )   20 - 21   2021

    DOI CiNii Research

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:The Institute of Electrical Engineers of Japan   Single Work  

    <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><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>

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Awards 【 display / non-display

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

  • 可逆量子磁束回路を用いた熱力学的限界を超える超低エネルギー集積回路技術の創成

    2019.6 - 2024.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(S)

    Investigator(s):吉川信行

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    Grant type:Competitive

  • 可逆量子磁束回路を用いた熱力学的限界を超える超低エネルギー論理回路の創成

    2019.4 - 2023.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(A)

    Investigator(s):吉川 信行

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    Grant type:Competitive

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

    2014.4 - 2019.3

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

    Investigator(s):Nobuyuki Yoshikawa

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    Grant type:Competitive

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

    2010.6 - 2015.3

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

    Investigator(s):Nobuyuki Yoshikawa

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    Grant type:Competitive

  • 超低電力機械学習に向けた確立的超伝導ニューラルネットワークの創出

    2022.4 - 2023.3

    Grant-in-Aid for Scientific Research(A)

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    Grant type:Competitive

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Other external funds procured 【 display / non-display

  • 量子制御電子集積回路の研究開発

    2022.4 - 2026.3

    Japan Science and Technology Agency 

    Investigator(s):吉川信行

  • 量子磁束回路を用いた量子ビット用制御・読出し回路の研究開発

    2018 - 2025

    高効率・高速処理を可能とするAIチップ・次世代コンピューティングの技術開発/次世代コンピューティング技術の開発/量子計算及びイジング計算システムの統合型研究開発

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    超伝導量子アニーリングマシンのための超伝導制御・読出し回路の研究開発

  • 米国IARPAプロジェクト SuperTools, 超伝導集積回路用CADツールの開発

    2017.9 - 2022.10

    米国IARPAプロジェクト SuperTools

    Investigator(s):吉川信行

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    大規模超伝導集積回路設計のためのCADツールの開発

  • 南アフリカとの共同研究(NRF)

    2014.7 - 2016.3

    Local Government 

    Investigator(s):吉川信行

  • 低エネルギー情報ネットワーク用光・磁気・超伝導融合システム

    2011.4 - 2017.3

    Japan Science and Technology Agency 

    Investigator(s):藤巻 朗

Presentations 【 display / non-display

  • C Moat Design and Analysis for AQFP Circuits

    L. Schindler, C. L. Ayala, N. Yoshikawa

    The 11th East Asia Symposium on Superconductor Electronics (EASSE-2023) 

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    Event date: 2023.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Okayama Convention Center, Okayama, Japan  

  • High-speed Josephson-CMOS interface circuits applied in the hybrid memory

    H. Shen, Z. Li, C. L. Ayala, Z. Han, N. Yoshikawa

    The 11th East Asia Symposium on Superconductor Electronics (EASSE-2023) 

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    Event date: 2023.3

    Language:English   Presentation type:Poster presentation  

    Venue:Okayama Convention Center, Okayama, Japan  

  • Demonstration of High-Speed Operation of a Majority-Booster Gate in Adiabatic Quantum-Flux-Parametron Circuits

    W. Komiya, N. Takeuchi, Y. Yamanashi, N. Yoshikawa

    The 11th East Asia Symposium on Superconductor Electronics (EASSE-2023) 

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    Event date: 2023.3

    Language:English   Presentation type:Poster presentation  

    Venue:Okayama Convention Center, Okayama, Japan  

  • Demonstration of a Superconducting Stochastic Memory for Stochastic Computing Systems

    W. Luo, N. Takeuchi, O. Chen, N. Yoshikawa

    The 11th East Asia Symposium on Superconductor Electronics (EASSE-2023) 

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    Event date: 2023.3

    Language:English   Presentation type:Poster presentation  

    Venue:Okayama Convention Center, Okayama, Japan  

  • Design of a variable output amplitude microwave generator using ERSFQ circuit for qubits control

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

    The 11th East Asia Symposium on Superconductor Electronics (EASSE-2023) 

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    Event date: 2023.3

    Language:English   Presentation type:Poster presentation  

    Venue:Okayama Convention Center, Okayama, Japan  

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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

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 

 

Charge of on-campus class subject 【 display / non-display

  • 2023   Electronic Circuits

    College of Engineering Science

  • 2023   Basics Electronic Circuits

    College of Engineering Science

  • 2023   Integrated Electronics

    College of Engineering Science

  • 2023   Electronic Devices

    College of Engineering Science

  • 2023   VLSI Systems

    College of Engineering Science

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Committee Memberships 【 display / non-display

  • 日本学術振興会第146委員会

    2018.5  委員長

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    Committee type:Other 

  • Board Members of Applied Superconductivity Conference

    2016.10 - 2022.9  Board Members of Applied Superconductivity Conference

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    Committee type:Academic society 

  • 日本学術振興会学術システム研究センター

    2016.4 - 2019.3  研究員

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    Committee type:Academic society 

  • 電気学会金属セラミックス技術委員会

    2014.5  委員長

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    Committee type:Academic society 

    吉川信行、電気学会金属セラミックス技術委員会委員長、http://www.iee.jp/fms/?page_id=43、2014年5月〜

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

  • 13th Superconducting SFQ VLSI Workshop (SSV 2020)

    Role(s): Guest, Host, Chief editor, Interviewer, Planner, Logistic support, Report author

    13th Superconducting SFQ VLSI Workshop   Yokohama Port Opening Memorial Hall, Yokohama  2020.1

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    Audience: University students, Graduate students, Researchers, Scientific organization, Company

    Type:Planning and holding meetings,conferences,e.t.c.

    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

    Role(s): Guest, Host, Chief editor, Interviewer, Planner, Logistic support, Report author, Other

    146th Committee on Superconductive Electronics, JSPS  Yokohama Port Opening Memorial Hall, Yokohama  2020.1

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    Audience: University students, Graduate students, Researchers, Scientific organization, Company, Government agency, Media

    Type:Planning and holding meetings,conferences,e.t.c.

  • 集積回路に超電導チップ 消費電力1000分の1以下 横浜国大データ拠点に応用

    Role(s): Filming support

    日経産業新聞  2019.3

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    Audience: General public

    Type:Newspaper, magazine

    吉川信行、竹内尚輝、”集積回路に超電導チップ 消費電力1000分の1以下 横浜国大データ拠点に応用”、日経産業新聞、2019年3月28日

  • コンピュータの消費電力1000分の1以下に、実現する集積回路の仕組み 横浜国大が実証

    Role(s): Filming support

    ニュースイッチ 日刊工業新聞 電子版  2019.2

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    Audience: General public

    Type:Internet

    吉川信行、”コンピュータの消費電力1000分の1以下に、実現する集積回路の仕組み 横浜国大が実証”、ニュースイッチ、2019年2月4日

  • 消費電力1/1000以下 コンピュータ 超電導集積回路で実証 横浜国大

    Role(s): Filming support

    日刊工業新聞  2019.2

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    Audience: General public

    Type:Newspaper, magazine

    吉川信行、”消費電力1/1000以下 コンピュータ 超電導集積回路で実証 横浜国大”、日刊工業新聞、2019年2月4日