Timing Controller for a Superconductor Microwave Switch using Adiabatic Quantum Flux Parametron Circuits

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: 2022/05/01

タイトル(英語): Timing Controller for a Superconductor Microwave Switch using Adiabatic Quantum Flux Parametron Circuits

著者名: Hongxiang Shen (Department of Electrical and Computer Engineering, Yokohama National University), Naoki Takeuchi (The Research Center for Emerging Computing Technologies, The National Institute of Advanced Industrial Science and Technology (AIST)), Yuki Y

著者名(英語): Hongxiang Shen (Department of Electrical and Computer Engineering, Yokohama National University), Naoki Takeuchi (The Research Center for Emerging Computing Technologies, The National Institute of Advanced Industrial Science and Technology (AIST)), Yuki Yamanashi (Department of Electrical and Computer Engineering, Yokohama National University/The Institute of Advanced Sciences, Yokohama National University), Nobuyuki Yoshikawa (Department of Electrical and Computer Engineering, Yokohama National University/The Institute of Advanced Sciences, Yokohama National University)

キーワード: quantum computer，adiabatic quantum flux parametron，AQFP，single flux quantum，SFQ processor，microwave switch

要約(英語): We are developing a microwave pulse generator, whose pulse width and amplitude can be arbitrarily controlled, to manipulate superconducting quantum computing systems. The proposed microwave pulse generator is made using superconducting circuits. It can be placed at a 4.2 K or lower temperature stages to control a large-scale quantum computing system effectively. One of the key components of the microwave pulse generator is the timing controller, which generates trigger pulses for the microwave switch to start and stop the microwave irradiation. The target frequency of the microwave is 5 GHz, and the timing controller has to generate trigger pulses with a time resolution of several nanoseconds. We designed a 4-bit timing controller using an adiabatic quantum flux parametron (AQFP) circuit, which is extremely energy-efficient superconducting logic. The designed timing controller derives two trigger pulses, start and stop, to the microwave switch at the timing designated by digital data. We implemented the AQFP timing controller using the AIST HSTP process and demonstrated its operation at 1 GHz. Its power dissipation was estimated as about 1.25×10-9 W at 1 GHz.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.142 No.5 （2022） 特集：量子コンピュータ周辺回路としての低温デジタル回路

本誌掲載ページ: 197-201 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/142/5/142_197/_article/-char/ja/