连续变量量子计算和量子纠错研究进展  

Research advances in continuous-variable quantum computation and quantum error correction

作　　者：王美红[1] 郝树宏 秦忠忠 苏晓龙[1] Wang Mei-Hong;Hao Shu-Hong;Qin Zhong-Zhong;Su Xiao-Long(State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-Electronics,Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China;School of Mathematics and Physics,Anhui University of Technology,Maanshan 243000,China)

机构地区：[1]山西大学光电研究所量子光学与光量子器件国家重点实验室极端光学协同创新中心,太原030006 [2]安徽工业大学数理科学与工程学院,马鞍山243000

出　　处：《物理学报》2022年第16期56-68,共13页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11834010,62005149,11804001,11974227);山西省“1331工程”重点学科建设经费;山西省基础研究计划(批准号:20210302121002,20210302122002,201901D211164)资助的课题。

摘　　要：量子计算机在解决某些复杂问题方面具有经典计算机无法比拟的优势.实现大规模量子计算需建立具有通用性、可扩展性和容错性的硬件平台.连续变量光学系统具有独特的优势,是实现大规模量子计算的一种可行途径,近年来受到了广泛关注.基于测量的连续变量量子计算通过对大规模高斯簇态(cluster态)的测量和测量结果的前馈来实现计算,为实现量子计算提供了一条可行的途径.量子纠错是量子计算和量子通信中保护量子信息的重要环节.本文简要介绍了基于cluster态的单向量子计算、基于光学薛定谔猫态的量子计算和连续变量量子纠错的基本原理和研究进展,并讨论了连续变量量子计算面临的问题和挑战.Quantum computation presents incomparable advantages over classical computer in solving some complex problems.To realize large-scale quantum computation,it is required to establish a hardware platform that is universal,scalable and fault tolerant.Continuous-variable optical system,which has unique advantages,is a feasible way to realize large-scale quantum computation and has attracted much attention in recent years.Measurement-based continuous-variable quantum computation realizes the computation by performing the measurement and feedforward of measurement results in large-scale Gaussian cluster states,and it provides an efficient method to realize quantum computation.Quantum error correction is an important part in quantum computation and quantum communication to protect quantum information.This review briefly introduces the basic principles and research advances in one-way quantum computation based on cluster states,quantum computation based on optical Schr?dinger cat states and quantum error correction with continuous variables,and discusses the problems and challenges that the continuous-variable quantum computation is facing.

关 键 词：量子计算 连续变量 cluster态 薛定谔猫态 量子纠错 

分 类 号：O413[理学—理论物理] TP38[理学—物理]