Development of adiabatic superconductor integrated circuits using niobium nitride

• Project/Area Number: 16K18089
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: Yokohama 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)
• Research Collaborator: TERAI Hirotaka 情報通信研究機構, 未来ICT研究所フロンティア創造総合研究室, 上席研究員 ; MIYAJIMA Shigeyuki 情報通信研究機構, 未来ICT研究所フロンティア創造総合研究室, 研究員 ; YOSHIKAWA Nobuyuki 横浜国立大学, 大学院工学研究院, 教授
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 磁束量子パラメトロン / 断熱ロジック / 窒化ニオブ / 超伝導集積回路 / 断熱型超伝導回路 / セルライブラリ / QFP / 電子デバイス・機器 / 超伝導材料・素子

Outline of Final Research Achievements

We investigated adiabatic superconductor logic, or AQFP logic, using niobium nitride (NbN) to achieve superconductor integrated circuits that can operate at higher temperature than 4 K. We designed NbN-AQFP logic gates using the NbN integrated-circuit fabrication process provided by the National Institute of Information and Communications Technology (NICT). We designed the mask layout of a test circuit that includes basic NbN-AQFP logic gates and fabricated it using the NICT process. We also evaluated the operational stability and energy dissipation of NbN-AQFP gates. Our results indicate the advantage of NbN-AQFP gates: small circuit area; high operational stability; small energy dissipation.

Research Products

• [Journal Article] Adiabatic quantum-flux-parametron interface for the readout of superconducting nanowire single-photon detectors (2017)
  • Author(s): Takeuchi Naoki、Yamashita Taro、Miyajima Shigeyuki、Miki Shigehito、Yoshikawa Nobuyuki、Terai Hirotaka
  • Journal Title: Optics Express Volume: 25 Issue: 26 Pages: 32650-32650
  • DOI: 10.1364/oe.25.032650
  • Peer Reviewed / Open Access
• [Journal Article] Three-dimensional adiabatic quantum-flux-parametron fabricated using a double-active-layered niobium process (2017)
  • Author(s): Ando Takumi、Nagasawa Shuichi、Takeuchi Naoki、Tsuji Naoki、China Fumihiro、Hidaka Mutsuo、Yamanashi Yuki、Yoshikawa Nobuyuki
  • Journal Title: Superconductor Science and Technology Volume: 30 Issue: 7 Pages: 075003-075003
  • DOI: 10.1088/1361-6668/aa6ef4
  • Peer Reviewed
• [Journal Article] Measurement of low bit-error-rates of adiabatic quantum-flux-parametron logic using a superconductor voltage driver (2017)
  • Author(s): Takeuchi Naoki、Suzuki Hideo、Yoshikawa Nobuyuki
  • Journal Title: Applied Physics Letters Volume: 110 Issue: 20 Pages: 202601-202601
  • DOI: 10.1063/1.4983351
  • Peer Reviewed
• [Journal Article] Recent Progress on Adiabatic Quantum-flux-parametron Logic for Extremely Low-power Microprocessors (2017)
  • Author(s): 竹内 尚輝
  • Journal Title: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) Volume: 52 Issue: 5 Pages: 332-339
  • DOI: 10.2221/jcsj.52.332
  • NAID: 130006183700
  • ISSN: 0389-2441, 1880-0408
  • Peer Reviewed / Open Access
• [Journal Article] Adiabatic quantum-flux-parametron cell library designed using a 10 kA cm^-2 niobium fabrication process (2017)
  • Author(s): N. Takeuchi, S. Nagaswa, F. China, T. Ando, M. Hidaka, Y. Yamanashi, N. Yoshikawa
  • Journal Title: Superconductor Science and Technology Volume: vol. 30, No. 3 Issue: 3 Pages: 035002-035002
  • DOI: 10.1088/1361-6668/aa52f3
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Adiabatic Quantum-Flux-Parametron Constant Cells using Asymmetrical Structures (2016)
  • Author(s): 安藤拓生, 竹内尚輝, 山梨裕希, 吉川信行
  • Journal Title: IEEJ Transactions on Fundamentals and Materials Volume: 136 Issue: 12 Pages: 747-752
  • DOI: 10.1541/ieejfms.136.747
  • NAID: 130005171372
  • ISSN: 0385-4205, 1347-5533
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Inductance and Current Distribution Extraction in Nb Multilayer Circuits with Superconductive and Resistive Components (2016)
  • Author(s): C. Fourie, N. Takeuchi, N. Yoshikawa
  • Journal Title: IEICE Transactions on Electronics Volume: E99.C Issue: 6 Pages: 683-691
  • DOI: 10.1587/transele.E99.C.683
  • NAID: 130005154687
  • ISSN: 0916-8524, 1745-1353
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Recent Development and Applications of Adiabatic Quantum Flux Parametron (2018)
  • Author(s): N. Takeuchi, C. L. Ayala, Q. Xu, H. Suzuki, Y. Yamanashi, T. Ortlepp, and N. Yoshikawa
  • Organizer: The 11th Superconducting SFQ VLSI Workshop (SSV2018)
  • Int'l Joint Research
• [Presentation] 同一冷凍機内でのSSPDとAQFPインターフェイス回路の接続実証 (2018)
  • Author(s): 竹内 尚輝, 山下 太郎, 宮嶋 茂之, 三木 茂人, 吉川 信行, 寺井弘高
  • Organizer: 第65回応用物理学会春季学術講演会
• [Presentation] Adiabatic quantum-flux-parametron cell library developed using a 10 kA cm－2 niobium fabrication process (2017)
  • Author(s): N. Takeuchi, S. Nagasawa, F. China, T. Ando, M. Hidaka, Y. Yamanashi, and N. Yoshikawa
  • Organizer: The 10th Superconducting SFQ VLSI Workshop (SSV2017)
  • Place of Presentation: 名古屋大学, 愛知
  • Year and Date: 2017-02-20
  • Int'l Joint Research
• [Presentation] Current Progress in Adiabatic Quantum Flux Parametron (2017)
  • Author(s): N. Takeuchi, C. Ayala, Q. Xu, Y. Yamanashi, and N. Yoshikawa
  • Organizer: The 30th International Symposium on Superconductivity (ISS 2017)
  • Int'l Joint Research / Invited
• [Presentation] High-density Integration of Adiabatic Quantum-Flux-Parametron Circuits by Using Double-Active-Layered Niobium Process (2017)
  • Author(s): F. China, N. Tsuji, T. Ando, H. Takayama, N. Takeuchi, S. Nagasawa, M. Hidaka, Y. Yamanashi, and N. Yoshikawa
  • Organizer: The 16th International Superconductive Electronics Conference (ISEC 2017)
  • Int'l Joint Research
• [Presentation] Yield evaluation of 83k-junction adiabatic quantum-flux-parametron circuit (2016)
  • Author(s): T. Narama, F. China, N. Takeuchi, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa
  • Organizer: The Applied Superconductivity Conference 2016 (ASC 2016)
  • Place of Presentation: Denver, USA
  • Year and Date: 2016-09-05
  • Int'l Joint Research / Invited
• [Presentation] A Review of Current Progress of Adiabatic Quantum-Flux-Parametron Logic (2016)
  • Author(s): N. Takeuchi, C. L. Ayala, Q. Xu, F. China, N. Tsuji, T. Ando, Y. Murai, K. Fang, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa
  • Organizer: The 9th Superconducting SFQ VLSI Workshop (SSV2016)
  • Place of Presentation: 横浜国立大学, 神奈川
  • Year and Date: 2016-08-03
  • Int'l Joint Research / Invited
• [Presentation] Recent Progress towards Energy-Efficient Microprocessors Using AQFP Logic (2016)
  • Author(s): N. Takeuchi, C. Ayala, Q. Xu, F. China, N. Tsuji, T. Narama, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa
  • Organizer: The 5th International Conference on Superconductivity and Magnetism (ICSM 2016)
  • Place of Presentation: Fethiye, Turkey
  • Year and Date: 2016-04-27
  • Int'l Joint Research / Invited