Single-Flux-Quantum Circuits based on Localized Electromagnetic Waves

2009 Fiscal Year Final Research Report

• Project/Area Number: 18080006
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Yokohama National University
• Principal Investigator: YOSHIKAWA Nobuyuki Yokohama National University, 大学院・工学研究院, 教授 (70202398)
• Co-Investigator(Kenkyū-buntansha): FUJIMAKI Akira 国立大学法人名古屋大学, 大学院・工学研究科, 教授 (20183931) ; NAKAJIMA Kouji 国立大学法人東北大学, 電気通信研究所, 教授 (60125622) ; MYOREN Hiroaki 国立大学法人埼玉大学, 工学部, 教授 (20219827) ; KANEDA Hisayoshi 国立大学法人横浜国立大学, 大学院・工学研究院, 助手 (30242382)
• Project Period (FY): 2006 – 2009
• Keywords: 局在電磁波 / 単一磁束量子 / 超伝導回路 / ジョセフソン接合 / 低消費電力 / SFQ回路 / サブテラヘルツ / 演算回路

Research Abstract

This research project promoted the study on single-flux-quantum (SFQ) circuits based on localized electromagnetic waves by the effective use of superconducting transmission lines in order to establish fundamental technologies for future sub-terahertz integrated circuits. The project conducted the systematic study on physics, materials, fabrication technologies, design technologies and application technologies of SFQ integrated circuits. Fabrication and design technologies for SFQ circuits have been highly developed and their applications to digital signal processing were demonstrated.

Research Products

• [Journal Article] Access Time Measurement of 64-kb Josephson-CMOS Hybrid Memories using SFQ Time-to-Digital Converter (2010)
  • Author(s): Y. Okamoto, H. Jin, K. Yaguchi, Y. Yamanashi, N. Yoshikawa
  • Journal Title: IEICE Electron. Express vol.7 Pages: 320-325
  • Peer Reviewed
• [Journal Article] New delay-time measurements on a 64 kb Josephson-CMOS hybrid memory with 600 ps access time (2010)
  • Author(s): K. Fujiwara, Q. Liu, T. Van Duzer, X. Meng, N. Yoshikawa
  • Journal Title: IEEE Trans. Appl. Superconductivity vol.20 Pages: 14-20
  • Peer Reviewed
• [Journal Article] 3D simulation of superconducting microwave devices with an electromagneticfield simulator (2009)
  • Author(s): N. Takeuchi, Y. Yamanashi, Y. Saito, N. Yoshikawa
  • Journal Title: Physica C vol.469 Pages: 1662-1665
  • Peer Reviewed
• [Journal Article] Design and Implementation of SFQ Half-Precision Floating-Point Adders (2009)
  • Author(s): H. Park, Y. Yamanashi, K. Taketomi, N. Yoshikawa, M. Tanaka, K. Obata, Y. Itou, A. Fujimaki, N. Takagi, K. Takagi, S. Nagasawa
  • Journal Title: IEEE Trans. Appl. Superconductivity vol.19 Pages: 634-639
  • Peer Reviewed
• [Journal Article] SFQ pulse transfer circuits using inductive coupling for current recycling (2009)
  • Author(s): M. Igarashi, K. Churei, N. Yoshikawa, K. Fujiwara, Y. Hashimoto
  • Journal Title: IEEE Trans. Appl. Superconductivity vol.19 Pages: 649-652
  • Peer Reviewed
• [Journal Article] Direct measurements of propagation delay of single-flux-quantum circuits by time-to-digital converters (2008)
  • Author(s): K. Nakamiya, N. Yoshikawa, A. Fujimaki, H. Terai, Y. Hashimoto
  • Journal Title: IEICE Electronics Express Vol.5,No.9 Pages: 332-337
  • Peer Reviewed
• [Journal Article] 単一磁束量子回路を用いた超高速マイクロプロセッサの開発とその展望 (2008)
  • Author(s): 吉川信行
  • Journal Title: 電子情報通信学会論文誌C vol.J91-C Pages: 183-193
  • Peer Reviewed
• [Journal Article] Design and Implementation of a Pipelined Bit-Serial SFQ Microprocessor, CORE1beta (2007)
  • Author(s): Y. Yamanashi, M. Tanaka, A. Akimoto, H. Park, Y. Kamiya, N. Irie, N. Yoshikawa, A. Fujimaki, H. Terai, Y. Hashimoto
  • Journal Title: IEEE Trans. Applied Superconductivity vol.17 Pages: 474-477
  • Peer Reviewed
• [Journal Article] Study of LR-Loading Technique for Low-Power Single Flux Quantum Circuits (2007)
  • Author(s): Y. Yamanashi, T. Nishigai, N. Yoshikawa
  • Journal Title: IEEE Trans. Applied Superconductivity vol.17 Pages: 150-153
  • Peer Reviewed
• [Journal Article] Bit-Error-Rate Measurements of RSFQ Shift Register Memories (2007)
  • Author(s): T. Hikida, K. Fujiwara, N. Yoshikawa, A. Fujimaki, H. Terai, S. Yorozu
  • Journal Title: EEE Trans. Applied Superconductivity vol.17 Pages: 512-515
  • Peer Reviewed
• [Journal Article] Design and Implementation of a Fully Asynchronous SFQ Microprocessor: SCRAM2 (2007)
  • Author(s): Y. Nobumori, T. Nishigai, K. Nakamiya, N. Yoshikawa, A. Fujimaki, H. Terai, S. Yorozu
  • Journal Title: IEEE Trans. Applied Superconductivity vol.17 Pages: 478-481
  • Peer Reviewed
• [Journal Article] A new design approach for control circuits of pipelined single-flux-quantum microprocessors (2006)
  • Author(s): Y. Yamanashi, A. Akimoto, N. Yoshikawa, M. Tanaka, T. Kawamoto, Y. Kamiya, A. Fujimaki, H. Terai, S. Yorozu
  • Journal Title: Supercond. Sci. Technol. 19 Pages: S340-S343
  • Peer Reviewed
• [Journal Article] Access time measurements of Josephson-CMOS hybrid memory using single-flux-quantum circuits (2006)
  • Author(s): N. Yoshikawa, M. Tokuda, T. Tomida, H. Kojima, K. Fujiwara, Q. Liu, T. Van Duzer
  • Journal Title: Supercond. Sci. Technol. 19 Pages: S350-S353
  • Peer Reviewed
• [Presentation] 50 GHz operation of SFQ floating-point multiplier using 10 kA/cm2 Nb process (2010)
  • Author(s): Y. Shimamura, K. Toshiki, F. Miyaoka, Y. Yamanashi, N. Yoshikawa, A. Fujimaki, N. Takagi, K. Takagi
  • Organizer: Abstract of 2010 Applied Superconductivity Conference (ASC2010)
  • Place of Presentation: Washington DC
  • Year and Date: 20100801-20100806
• [Presentation] Adiabatic quantum flux parametron as an ultra-low-power superconducting logic device (2010)
  • Author(s): N. Yoshikawa, D. Ozawa
  • Organizer: Abstract of 2010 Applied Superconductivity Conference (ASC2010)
  • Place of Presentation: Washington DC
  • Year and Date: 20100801-20100806
• [Presentation] Design and implementation of component circuits of an SFQ half-precision floating-point adder using 10 kA/cm2 Nb process (2010)
  • Author(s): T. Kainuma, Y. Yamanashi, N. Yoshikawa, A. Fujimaki, N. Takagi, K. Takagi
  • Organizer: Abstract of 2010 Applied Superconductivity Conference (ASC2010)
  • Place of Presentation: Washington DC
  • Year and Date: 20100801-20100806
• [Presentation] Design and Implementation of Multi-flux drivers using High Beta_c Junctions (2010)
  • Author(s): D. OZAWA, Y. Natsume, Y. Yamanashi, N. Yoshikawa
  • Organizer: Abstract of 2010 Applied Superconductivity Conference (ASC2010)
  • Place of Presentation: Washington DC
  • Year and Date: 20100801-20100806
• [Presentation] High-speed test of a radix-2 butterfly processing element for the Fast Fourier Transform using SFQ circuits (2010)
  • Author(s): F. Miyaoka, T. Kainuma, Y. Shimamura, Y. Yamanashi, N. Yoshikawa
  • Organizer: Abstract of 2010 Applied Superconductivity Conference (ASC2010)
  • Place of Presentation: Washington DC
  • Year and Date: 20100801-20100806
• [Presentation] Integration of optical waveguides with SFQ circuits (2010)
  • Author(s): Y. Arita, N. Yoshikawa, T. Baba, Y. Yamanashi
  • Organizer: Abstract of 2010 Applied Superconductivity Conference (ASC2010)
  • Place of Presentation: Washington DC
  • Year and Date: 20100801-20100806
• [Presentation] Development of SFQ Logic Gates Connectable to Passive Transmission Lines and Their Application to Digital Signal Processors (2010)
  • Author(s): N. Yoshikawa, H. Suzuki, K. Taketomi, Y. Yamanashi
  • Organizer: Proceedings of Superconducting SFQ VLSI Workshop (SSV 2010)
  • Place of Presentation: Yokohama National University, Yokohama
  • Year and Date: 2010-01-13
• [Presentation] (Invited) High-Speed Floating-Point Processors based on Single-Flux-Quantum Circuit Technology (2009)
  • Author(s): N. Yoshikawa, T. Kainuma, H. Park, Y. Yamanashi, A. Fujimaki, N. Takagi, K. Takagi
  • Organizer: Asian Conference of Applied Superconductivity and Cryogenics (ACASC 2009)
  • Place of Presentation: Matsue, Japan
  • Year and Date: 20091206-20091208
• [Presentation] (Invited) Component Design and Test of 50-GHz Half-Precision Floating-Point Adders and Multipliers (2009)
  • Author(s): N. Yoshikawa, T. Kainuma, H. Park, Y. Yamanashi, A. Fujimaki, N. Takagi, K. Takagi
  • Organizer: EUROFLUX 2009 International Conference, Avignon
  • Place of Presentation: France
  • Year and Date: 20090920-20090923
• [Presentation] (Invited) Recent Research Activities in the MEXT SFQ Project (2009)
  • Author(s): N. Yoshikawa
  • Organizer: Technical Program of Superconducting SFQ VLSI Workshop (SSV 2009)
  • Place of Presentation: Kyushu University School of Medicine
  • Year and Date: 2009-06-16
• [Presentation] (Invited) Recent development of Large-Scale reconfigurable data-paths using RSFQ Circuits (2008)
  • Author(s): N. Yoshikawa, H. Park, H. Hara, K. Taketomi, Y. Yamanashi, I. Kataeva, R. Kasagi, S. Iwasaki, H. Akaike, A. Fujimaki, M. Tanaka, K. Obata, Y. Ito, K. Takagi, N. Takagi, H. Honda, K. Inoue, K. Murakami, S. Nagasawa, M. Hidaka
  • Organizer: Abstracts on 21st International Symposium on Superconductivity (ISS2008)
  • Place of Presentation: Tsukuba
  • Year and Date: 20081027-20081029
• [Presentation] Invited) Design and Implementation of SFQ Half-Precision Floating-Point Adders (2008)
  • Author(s): H. Park, Y. Yamanashi, K. Taketomi, N. Yoshikawa, M. Tanaka, K. Obata, Y. Itou, A. Fujimaki, N. Takagi, K. Takagi, S. Nagasawa
  • Organizer: 2008 Applied Superconductivity Conference (ASC 2008)
  • Place of Presentation: Chicago
  • Year and Date: 20080817-20080822
• [Presentation] (Invited) RSFQ projects in Japan (2008)
  • Author(s): N. Yoshikawa
  • Organizer: 5th FLUXONICS RSFQ design workshop
  • Place of Presentation: Ilmenau
  • Year and Date: 2008-06-29
• [Presentation] Development of SFQ Logic Gated with Passive Transmission lines and Their Application to Digital Signal Processors (2008)
  • Author(s): N. Yoshikawa
  • Organizer: Superconducting SFQ VLSI Workshop 2008
  • Place of Presentation: Yokohama National University, Japan
  • Year and Date: 2008-03-14
• [Presentation] (Invited) Superconductor Electronics based on Single-Flux-Quantum Circuit Technology, " East Asia Symposium (2007)
  • Author(s): N. Yoshikawa
  • Organizer: East Asia Symposium on Superconductor Electronics (EASSE2007)
  • Place of Presentation: Delhi, India
  • Year and Date: 20071211-20071215
• [Presentation] (Invited) Review of the CORE1 Microprocessor Project: Recent Development and Next Plans (2007)
  • Author(s): N. Yoshikawa, M. Tanaka, Y. Yamanashi, N. Irie, H. Park, S. Iwasaki, K. Taketomi, A. Fujimaki, H. Terai, S. Yorozu
  • Organizer: Extended Abstract of 11th International Superconductivity Electronics Conference
  • Place of Presentation: Washington DC, USA
  • Year and Date: 20070610-20070614
• [Remarks]
  • URL: http://www.yoshilab.dnj.ynu.ac.jp/tokutei/