非対称構造を用いた断熱型磁束量子パラメトロン定数セル

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): Adiabatic Quantum-Flux-Parametron Constant Cells using Asymmetrical Structures

著者名: 安藤　拓生（横浜国立大学 大学院工学府），竹内　尚輝（横浜国立大学 先端科学高等研究院／（国）科学技術振興機構 さきがけ），山梨　裕希（横浜国立大学 大学院工学府／横浜国立大学 先端科学高等研究院），吉川　信行（横浜国立大学 大学院工学府／横浜国立大学 先端科学高等研究院）

著者名(英語): Takumi Ando (Graduate School of Engineering, Yokohama National University), Naoki Takeuchi (Inst. of Advanced Sciences, Yokohama National University/PRESTO, Japan Science and Technology Agency), Yuki Yamanashi (Graduate School of Engineering, Yokohama National University/Inst. of Advanced Sciences, Yokohama National University), Nobuyuki Yoshikawa (Graduate School of Engineering, Yokohama National University/Inst. of Advanced Sciences, Yokohama National University)

キーワード: QFP，断熱論理，超電導集積回路　　QFP，adiabatic logic，superconducting integrated circuit

要約(英語): We have been developing adiabatic quantum-flux-parametron (AQFP) circuits as an ultra-low-power superconductor logic for energy-efficient computing. In AQFP logic, logic circuits are designed by arraying the four types of building block cells, that include buffer, NOT, constant, and branch. The constant cell is a gate which always switches to a specific logic state when excited and is used in AND and OR gates. In this paper, we discuss the design method of the constant cell. Since the constant cell works thanks to the asymmetry in inductances or excitation fluxes, we analyzed the relationship between operation margins and asymmetry in inductances or excitation fluxes. The simulation results show that the asymmetry in excitation fluxes can easily increase the operation margins, compared to that in inductances. Taking into account the simulation results, we redesigned a constant cell, to which excitation fluxes are applied asymmetrically. We designed and fabricated AND and XOR gates using the constant cell. The measurement results show that the logic circuits designed using the constant cell work with wide operation margins.

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: 747-752 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_747/_article/-char/ja/