摘要
随着Google首次在53位量子比特超导量子计算机验证了量子霸权,近年来量子计算技术成为了研究的热点。虽然超导量子计算机拥有极为强大的运算潜力,但容易受到退相干、环境噪声、串扰等因素的影响。这将导致在量子计算机上执行较为复杂的量子算法时,其运行结果不准确,这也是量子计算机难以实用化的重要原因。目前,IBM研发的小规模超导量子计算机面向用户免费开放量子云平台,并定时对机器性能参数进行校准。利用IBM量子云平台部分机器,对读出误差、CNOT门误差及其量子体积进行7天测试,并与IBM量子云平台声明数据进行对比,来验证IBM云平台声明参数的可信度。结果证明实测值与IBM量子计算机声明值存在误差,且性能指标参数有浮动。通过对性能参数的测评,用户能够更准确、更快速地根据自身需求选择最佳的量子云平台机器进行算法实验。
With Google’s first demonstration of quantum hegemony in a 53 bit superconducting quantum computer,quantum computing technology has become a research hotspot in recent years.Although superconducting quantum computers have great computational potential,they are easily affected by decoherence,environmental noise and crosstalk.This will lead to the inaccuracy of the results of the more complex quantum algorithms executed on the quantum computer,which is also an important reason why the quantum computer is difficult to be practical.At present,the small-scale superconducting quantum computer developed by IBM is open to users free of charge,and the machine performance parameters are calibrated regularly.The readout error,CNOT gate error and quantum volume of IBM quantum cloud platform are tested for 7 days,and compared with the declared data of IBM quantum cloud platform to verify the reliability of the declared parameters of IBM cloud platform.The results show that there is an error between the measured value and the declared value of IBM quantum computer,and the performance index parameters are floating.Through the evaluation of performance parameters,users can choose the best quantum cloud platform machine for algorithm experiments more accurately and quickly according to their own needs.
作者
何明
刘晓楠
王俊超
庞建民
HE Ming;LIU Xiaonan;WANG Junchao;PANG Jianmin(State Key Laboratory of Digital Engineering and Advanced Computing, Zhengzhou 450001, China)
出处
《信息工程大学学报》
2021年第2期175-184,共10页
Journal of Information Engineering University
基金
国家自然科学基金计划资助项目(61272041)。
关键词
量子计算机
量子云平台
量子体积
误差测试
quantum computer
quantum cloud platform
quantum volume
error test
