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Study on programmable adiabatic superconductor circuits using magnetic Josephson junctions

Research Project

Project/Area Number 18H01493
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21060:Electron device and electronic equipment-related
Research InstitutionYokohama National University

Principal Investigator

Takeuchi Naoki  横浜国立大学, 先端科学高等研究院, 特任教員(准教授) (00746472)

Co-Investigator(Kenkyū-buntansha) 山下 太郎  名古屋大学, 工学研究科, 准教授 (60567254)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Keywords断熱磁束量子パラメトロン / π接合 / 超伝導エレクトロニクス / 磁性ジョセフソン接合 / プログラマブル / 低電力 / 超伝導集積回路 / 磁束量子パラメトロン / 超伝導回路 / ジョセフソン接合 / 磁性体 / 超伝導ディジタル回路 / 断熱ロジック
Outline of Final Research Achievements

This study aims to achieve programmable superconductor circuits by introducing π junctions to adiabatic quantum-flux-parametron (AQFP); a π junction is a magnetic Josephson junction, and AQFP is low-power superconductor logic. We have established fabrication technology for introducing π junctions to AQFP circuits, established a simulation method for AQFP circuits with π junctions, developed programmable AQFP circuits that utilize π junction-based memories, and demonstrated the programmable AQFP circuits at low temperature. Consequently, we have succeeded in achieving programmable superconductor circuit technology.

Academic Significance and Societal Importance of the Research Achievements

本研究により、プログラマブル超伝導回路の基盤技術が確立された。同回路は、低電力超伝導ロジックAQFPで構成されるため、極めて小さな消費電力で動作可能であり、将来的に超低電力FPGAに応用できると考えられる。また、このような超低電力FPGAは、スーパーコンピュータ、データセンター、最適化問題ソルバ等の様々なシステムの消費エネルギーの低減に貢献し、未来の情報社会を支える集積回路技術になると期待できる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (31 results)

All 2021 2020 2019 2018

All Journal Article (11 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 11 results,  Open Access: 5 results) Presentation (19 results) (of which Int'l Joint Research: 12 results,  Invited: 4 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Magnetic Josephson Junctions: New Phenomena and Physics with Diluted Alloy, Conventional Ferromagnet, and Multilayer Barriers2021

    • Author(s)
      Yamashita Taro
    • Journal Title

      IEICE Transactions on Electronics

      Volume: E104.C Issue: 9 Pages: 422-428

    • DOI

      10.1587/transele.2020SUI0004

    • NAID

      130008082175

    • ISSN
      0916-8524, 1745-1353
    • Year and Date
      2021-09-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impedance Design of Excitation Lines in Adiabatic Quantum-Flux-Parametron Logic Using InductEx2021

    • Author(s)
      Takeuchi Naoki、Suzuki Hideo、Fourie Coenrad J.、Yoshikawa Nobuyuki
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 1300605-1300605

    • DOI

      10.1109/tasc.2021.3058080

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Design and Demonstration of Directly Coupled Quantum-Flux-Parametron Circuits With Optimized Parameters2021

    • Author(s)
      Ishida Ryohei、Takeuchi Naoki、Yamae Taiki、Yoshikawa Nobuyuki
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Issue: 5 Pages: 1100505-1100505

    • DOI

      10.1109/tasc.2021.3059723

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Directly coupled adiabatic superconductor logic2020

    • Author(s)
      Takeuchi Naoki、Arai Kota、Yoshikawa Nobuyuki
    • Journal Title

      Superconductor Science and Technology

      Volume: 33 Issue: 6 Pages: 065002-065002

    • DOI

      10.1088/1361-6668/ab87ad

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] π phase shifter based on NbN-based ferromagnetic Josephson junction on a silicon substrate2020

    • Author(s)
      Yamashita Taro、Kim Sunmi、Kato Haruki、Qiu Wei、Semba Kouichi、Fujimaki Akira、Terai Hirotaka
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 13687-13687

    • DOI

      10.1038/s41598-020-70766-9

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Systematic method to evaluate energy dissipation in adiabatic quantum-flux-parametron logic2019

    • Author(s)
      Yamae Taiki、Takeuchi Naoki、Yoshikawa Nobuyuki
    • Journal Title

      Journal of Applied Physics

      Volume: 126 Issue: 17 Pages: 173903-173903

    • DOI

      10.1063/1.5119306

    • NAID

      120006786475

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low-latency adiabatic superconductor logic using delay-line clocking2019

    • Author(s)
      Takeuchi Naoki、Nozoe Mai、He Yuxing、Yoshikawa Nobuyuki
    • Journal Title

      Applied Physics Letters

      Volume: 115 Issue: 7 Pages: 072601-072601

    • DOI

      10.1063/1.5111599

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Adiabatic quantum-flux-parametron with π Josephson junctions2019

    • Author(s)
      Arai Kota、Takeuchi Naoki、Yamashita Taro、Yoshikawa Nobuyuki
    • Journal Title

      Journal of Applied Physics

      Volume: 125 Issue: 9 Pages: 093901-093901

    • DOI

      10.1063/1.5080467

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication Technologies for Superconducting Quantum Circuits for Large-scale Quantum Computing2018

    • Author(s)
      寺井 弘高, 丘 偉, 山下 太郎
    • Journal Title

      TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)

      Volume: 53 Issue: 5 Pages: 295-305

    • DOI

      10.2221/jcsj.53.295

    • NAID

      130007500596

    • ISSN
      0389-2441, 1880-0408
    • Year and Date
      2018-08-20
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phase Shift and Control in Superconducting Hybrid Structures2018

    • Author(s)
      T. Yamashita
    • Journal Title

      IEICE Transactions on Electronics

      Volume: E101.C Issue: 5 Pages: 378-384

    • DOI

      10.1587/transele.E101.C.378

    • NAID

      130006729729

    • ISSN
      0916-8524, 1745-1353
    • Year and Date
      2018-05-01
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Design methodology of single-flux-quantum flip-flops composed of both 0- and π-shifted Josephson junctions2018

    • Author(s)
      Yamanashi Yuki、Nakaishi Sotaro、Sugiyama Akira、Takeuchi Naoki、Yoshikawa Nobuyuki
    • Journal Title

      Superconductor Science and Technology

      Volume: 31 Issue: 10 Pages: 105003-105003

    • DOI

      10.1088/1361-6668/aad78d

    • NAID

      120006501249

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 断熱磁束量子パラメトロンによる超低電力コンピューティング2021

    • Author(s)
      竹内 尚輝
    • Organizer
      2021年電子情報通信学会総合大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Impedance design of excitation lines in adiabatic quantum-flux-parametron logic using InductEx2021

    • Author(s)
      N. Takeuchi, H. Suzuki, C. J. Fourie, and N. Yoshikawa
    • Organizer
      Applied Superconductivity Conference 2020 (ASC 2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NbN-based Josephson junction with PdNi-ferromagnetic barrier2021

    • Author(s)
      Duong Pham, Riku Sugimoto, Hayate Nakamura, Masamitsu Tanaka, Taro Yamashita, Akira Fujimaki
    • Organizer
      American Physical Society (APS) March Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 断熱磁束量子パラメトロン ―様々な情報システムへの応用と今後の展望―2020

    • Author(s)
      竹内 尚輝
    • Organizer
      日本学術振興会超伝導エレクトロニクス第146委員会・合同分科会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Design and demonstration of directly-coupled quantum-flux-parametron circuits with optimized circuit parameters2020

    • Author(s)
      R. Ishida, N. Takeuchi, and N. Yoshikawa
    • Organizer
      Applied Superconductivity Conference 2020 (ASC 2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 直結式量子磁束パラメトロン回路における配線長の改善2020

    • Author(s)
      石田 椋平, 竹内 尚輝, 山栄 大樹, 吉川 信行
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 最適回路パラメータを用いた直結式量子磁束パラメトロン回路の動作実証2020

    • Author(s)
      石田 椋平, 竹内 尚輝, 山栄 大樹, 吉川 信行
    • Organizer
      2020年度春季低温工学・超電導学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Fabrication of Magnetic Josephson Junctions on Nb 4-layer Structure for Large Scale Half Flux Quantum Circuits2020

    • Author(s)
      Daiki Hasegawa, Yuto Takeshita, Feng Li, Kyosuke Sano, Masamitsu Tanaka, Taro Yamashita, and Akira Fujimaki
    • Organizer
      13th Superconducting SFQ VLSI Workshop (SSV 2020)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Adiabatic Quantum-Flux-Parametron: Recent Progress and Applications2020

    • Author(s)
      N. Takeuchi, C. L. Ayala, O. Chen, Y. He, and N. Yoshikawa
    • Organizer
      13th Superconducting SFQ VLSI Workshop (SSV2020)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Parameter optimization of directly coupled quantum flux parametron circuits2020

    • Author(s)
      R. Ishida, N. Takeuchi, and N. Yoshikawa
    • Organizer
      13th Superconducting SFQ VLSI Workshop (SSV2020)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magnetic Josephson junctions on Nb four-layer structure for half flux quantum circuits2019

    • Author(s)
      Daiki Hasegawa, Yuto Takeshita, Kyosuke Sano, Masamitsu Tanaka, Taro Yamashita, and Akira Fujimaki
    • Organizer
      17th International Superconductive Electronics Conference (ISEC 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Adiabatic quantum-flux-parametron: recent progress and possibility for quantum applications2019

    • Author(s)
      N. Takeuchi, C. L. Ayala, O. Chen, Y. He, and N. Yoshikawa
    • Organizer
      1st workshop on Quantum and Classical Cryogenic Devices, Circuits, and Systems (QCCC 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Low-latency adiabatic quantum-flux-parametron using delay-line clocking2019

    • Author(s)
      N. Takeuchi, M. Nozoe, Y. He, and N. Yoshikawa
    • Organizer
      17th International Superconductive Electronics Conference (ISEC 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 強磁性ジョセフソン接合と量子回路応用2019

    • Author(s)
      山下太郎
    • Organizer
      日本物理学会第74回年次大会(2019年)
    • Related Report
      2018 Annual Research Report
  • [Presentation] Inverting quantum flux parametron as adiabatic superconductor logic without transformers2018

    • Author(s)
      K. Arai, N. Takeuchi, Y. Yamanashi, and N. Yoshikawa
    • Organizer
      The Applied Superconductivity Conference 2018 (ASC 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 反転型量子磁束パラメトロンを用いたマイノリティゲートの動作実証2018

    • Author(s)
      荒井 孝太, 竹内 尚輝, 山梨 裕希, 吉川 信行
    • Organizer
      2018年電子情報通信学会ソサイエティ大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 反転型磁束量子パラメトロンを用いた論理回路の動作実証2018

    • Author(s)
      荒井 孝太, 竹内 尚輝, 山梨 裕希, 吉川 信行
    • Organizer
      電子情報通信学会超伝導エレクトロニクス研究会SCE2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] Development of pi-shift superconducting flux qubits2018

    • Author(s)
      T. Yamashita
    • Organizer
      13th International Workshop on Low Temperature Electronics (WOLTE 13)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NbN-based ferromagnetic Josephson junctions for π-shift superconducting flux qubits2018

    • Author(s)
      T. Yamashita, A. Kawakami, H. Terai, and A. Fujimaki
    • Organizer
      The Applied Superconductivity Conference 2018 (ASC 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 磁束バイアス回路2021

    • Inventor(s)
      竹内 尚輝, 吉川 信行, 橋本 義仁, 山本 剛, 平山 文紀
    • Industrial Property Rights Holder
      横浜国立大学, 日本電気, 産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-068575
    • Filing Date
      2021
    • Related Report
      2020 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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