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2020 Fiscal Year Annual Research Report

Neuromorphic processor using superconducting adiabatic quantum flux circuits

Research Project

Project/Area Number 18K13801
Research InstitutionYokohama National University

Principal Investigator

アヤラ クリストファー  横浜国立大学, 先端科学高等研究院, 特任教員(准教授) (90772195)

Project Period (FY) 2018-04-01 – 2021-03-31
Keywordssuperconductor / computing / adiabatic / sfq / aqfp / eda / neuron / eda
Outline of Annual Research Achievements

This research investigates new computing approaches to deal with the demand of Big Data generated from IoT technology using superconductor electronics. In this final year of this three year project, we focused on scaling our underlying technology so that we can build upon it for future research of more functionally-rich computing architectures. We published 4 papers (1 invited), and made 7 presentations at international conferences (1 invited). Our key result this year is the demonstration of the world’s first adiabatic superconductor microprocessor (DOI: 10.1109/JSSC.2020.3041338) with extremely low power consumption. Our research has been featured in both international and domestic magazines including IEEE Spectrum, Superconductor Week, and Nikkei XTECH/Nikkei Electronics.

  • Research Products

    (14 results)

All 2021 2020 Other

All Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 7 results,  Invited: 1 results) Remarks (3 results)

  • [Journal Article] Logic Synthesis of Sequential Logic Circuits for Adiabatic Quantum-Flux-Parametron Logic2021

    • Author(s)
      Saito Ro、Ayala Christopher L.、Chen Olivia、Tanaka Tomoyuki、Tamura Tomohiro、Yoshikawa Nobuyuki
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 31 Pages: 1~5

    • DOI

      10.1109/TASC.2021.3061636

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Buffer Reduction via N-Phase Clocking in Adiabatic Quantum-Flux-Parametron Benchmark Circuits2021

    • Author(s)
      Saito Ro、Ayala Christopher Lawrence、Yoshikawa Nobuyuki
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: - Pages: 1~1

    • DOI

      10.1109/TASC.2021.3073837

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] MANA: A Monolithic Adiabatic iNtegration Architecture Microprocessor Using 1.4-zJ/op Unshunted Superconductor Josephson Junction Devices2021

    • Author(s)
      Ayala Christopher L.、Tanaka Tomoyuki、Saito Ro、Nozoe Mai、Takeuchi Naoki、Yoshikawa Nobuyuki
    • Journal Title

      IEEE Journal of Solid-State Circuits

      Volume: 56 Pages: 1152~1165

    • DOI

      10.1109/JSSC.2020.3041338

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] MANA: A Monolithic Adiabatic iNtegration Architecture Microprocessor using 1.4zJ/op Superconductor Josephson Junction Devices2020

    • Author(s)
      Ayala Christopher L.、Tanaka Tomoyuki、Saito Ro、Nozoe Mai、Takeuchi Naoki、Yoshikawa Nobuyuki
    • Journal Title

      Proceedings of 2020 IEEE Symposium on VLSI Circuits

      Volume: - Pages: 1~1

    • DOI

      10.1109/VLSICircuits18222.2020.9162792

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 16-bit Adiabatic Quantum-Flux-Parametron SerDes Components2020

    • Author(s)
      Christopher L. Ayala, Naoki Takeuchi, Nobuyuki Yoshikawa
    • Organizer
      33rd International Symposium on Superconductivity (ISS 2020)
    • Int'l Joint Research
  • [Presentation] Development of a Generic Two-Layer Channel Routing Algorithm for Adiabatic Quantum-Flux-Parametron Logic Using Advanced Fabrication Processes2020

    • Author(s)
      Takehisa Yamada, Tomoyuki Tanaka, Ro Saito, Christopher Lawrence Ayala, Nobuyuki Yoshikawa
    • Organizer
      33rd International Symposium on Superconductivity (ISS 2020)
    • Int'l Joint Research
  • [Presentation] N-Phase Clocking Methodology for Adiabatic Quantum-Flux-Parametron Logic2020

    • Author(s)
      Ro Saito, Christopher L. Ayala, Nobuyuki Yoshikawa
    • Organizer
      33rd International Symposium on Superconductivity (ISS 2020)
    • Int'l Joint Research
  • [Presentation] A 4-bit RISC-dataflow AQFP MANA microprocessor: architecture, design challenges and demonstration2020

    • Author(s)
      Christopher L. Ayala, Ro Saito, Tomoyuki Tanaka, Tomohiro Tamura, Naoki Takeuchi, and Nobuyuki Yoshikawa
    • Organizer
      Applied Superconductivity Conference 2020 (ASC 2020)
    • Int'l Joint Research / Invited
  • [Presentation] Study of Clock Synchronization for High-Level Synthesis of Adiabatic Quantum-Flux-Parametron Sequential Logic Circuits2020

    • Author(s)
      Ro Saito, Christopher L. Ayala, Olivia Chen, Tomoyuki Tanaka, Tomohiro Tamura, Nobuyuki Yoshikawa
    • Organizer
      Applied Superconductivity Conference 2020 (ASC 2020)
    • Int'l Joint Research
  • [Presentation] A 16-bit parallel prefix carry look-ahead Kogge-Stone adder implemented in adiabatic quantum-flux-parametron logic2020

    • Author(s)
      Tomoyuki Tanaka, Christopher L. Ayala, Nobuyuki Yoshikawa
    • Organizer
      Applied Superconductivity Conference 2020 (ASC 2020)
    • Int'l Joint Research
  • [Presentation] MANA: A Monolithic Adiabatic iNtegration Architecture Microprocessor using 1.4zJ/op Superconductor Josephson Junction Devices2020

    • Author(s)
      Christopher L. Ayala, Tomoyuki Tanaka, Ro Saito, Mai Nozoe, Naoki Takeuchi, Nobuyuki Yoshikawa
    • Organizer
      2020 Symposia on VLSI Technology and Circuits
    • Int'l Joint Research
  • [Remarks] IAS超省エネルギープロセッサ研究ユニット

    • URL

      https://www.yoshilab.dnj.ynu.ac.jp/ias_e3p/

  • [Remarks] 超省エネルギープロセッサ研究ユニット

    • URL

      https://ias.ynu.ac.jp/news/20210322_media/index.html

  • [Remarks] Extremely energy efficient microprocessor (...)

    • URL

      https://www.eurekalert.org/pub_releases/2020-12/ynu-eee122820.php

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Published: 2021-12-27  

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