超导量子计算约瑟夫森参量放大器的基本工作原理  

THE BASIC PRINCIPLE OF SUPERCONDUCTING QUANTUM COMPUTING JOSEPHSON PARAMETRIC AMPLIFIER

作　　者：宿非凡 杨钊华 SU Feifan;YANG Zhaohua(China Electronics Information Industry Group Great Wall Laboratory,Changsha,Hunan 410205;Tianjin Advanced Technology Research Institute,Tianjin 300459;CAS Center Excellence in Quantum Information and Quantum Physics,Hefei,Anhui 230094;Institute of physics Chinese Academy of Science,Beijing 100190)

机构地区：[1]中国电子信息产业集团长城实验室,湖南长沙410205 [2]天津先进技术研究院,天津300459 [3]合肥国家实验室,安徽合肥230094 [4]中国科学院物理研究所,北京100190

出　　处：《物理与工程》2024年第4期114-120,共7页Physics and Engineering

摘　　要：约瑟夫森参量放大器是超导量子计算实验的关键,本文介绍其基本物理原理并对约瑟夫森参量放大器的器件物理特征、实现设计、发展变形作一详细的讨论,基于实际的实验经验,给出一套行之有效的约瑟夫森参量放大器最佳工作点的确定方法。本文有助于对超导量子计算感兴趣的读者全面掌握超导量子计算的实验方法与系统组成,同时对极低温信号放大器的设计有一定的参考意义。The Josephson parametric amplifier is the key to superconducting quantum computing experiments.This article introduces its basic physical principles and provides a detailed discussion on the device physical characteristics,implementation design,and development of Josephson parametric amplifiers.Finally,based on practical experimental experience,an effective method for determining the optimal operating point of Josephson parametric amplifiers was proposed.This article helps readers interested in superconducting quantum computing to comprehensively grasp the experimental methods and system composition of superconducting quantum computing,and has certain reference significance for the design of extremely low temperature signal amplifiers.

关 键 词：约瑟夫森参量放大器 超导量子比特 超导量子计算 

分 类 号：O413[理学—理论物理]