シャント抵抗を排した低電圧駆動単一磁束量子回路の低エネルギー化

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2016/12/01

タイトル(英語): Energy Reduction in Shunt-resistor-free Low-voltage Rapid Single-flux-quantum Circuits

著者名: 田中　雅光（名古屋大学大学院工学研究科），佐藤　諒（名古屋大学大学院工学研究科），畑中　湧貴（名古屋大学大学院工学研究科），藤巻　朗（名古屋大学大学院工学研究科）

著者名(英語): Masamitsu Tanaka (Graduate School of Engineering, Nagoya University), Ryo Sato (Graduate School of Engineering, Nagoya University), Yuki Hatanaka (Graduate School of Engineering, Nagoya University), Akira Fujimaki (Graduate School of Engineering, Nagoya University)

キーワード: 超伝導エレクトロニクス，単一磁束量子回路，エネルギー効率，超伝導位相エンジニアリング　　superconductive electronics，rapid single-flux-quantum logic，energy-efficiency，superconductor phase engineering

要約(英語): We report energy reduction in low-voltage rapid single-flux-quantum (LV-RSFQ) circuits using shunt-resistor-free Josephson junctions. The LV-RSFQ logic is one of energy-efficient derivatives of rapid single-flux-quantum (RSFQ) logic, which operates in a constant voltage mode. By lowering bias voltages, we can reduce power consumption at bias resistors which account for more than 90% of total power consumption, and also reduce the energy dynamically consumed during switching events because of slower transition of superconductor phase. Voltage drops across Josephson junctions cause a complicated trade-off between operation speed and power consumption. In this paper, we evaluated shunt-resistor-free LV-RSFQ shift-registers in terms of operation speed, power consumption, and energy-efficiency. Numerical simulation revealed their faster operation by up to 50% and accordingly higher energy-efficiency. Experimental results showed that a 0.5mV shift-register had superiority in operation speed and energy-efficiency.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.136 No.12 （2016） 特集：位相エンジニアリングに基づく超電導エレクトロニクスの最近の進展

本誌掲載ページ: 740-746 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/136/12/136_740/_article/-char/ja/