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典型文献
Measuring Loschmidt echo via Floquet engineering in superconducting circuits
文献摘要:
The Loschmidt echo is a useful diagnostic for the perfection of quantum time-reversal process and the sensitivity of quantum evolution to small perturbations.The main challenge for measuring the Loschmidt echo is the time reversal of a quantum evolution.In this work,we demonstrate the measurement of the Loschmidt echo in a superconducting 10-qubit system using Floquet engineering and discuss the imperfection of an initial Bell-state recovery arising from the next-nearest-neighbor(NNN)coupling present in the qubit device.Our results show that the Loschmidt echo is very sensitive to small perturbations during quantum-state evolution,in contrast to the quantities like qubit population that is often considered in the time-reversal experiment.These properties may be employed for the investigation of multiqubit system concerning many-body decoherence and entanglement,etc.,especially when devices with reduced or vanishing NNN coupling are used.
文献关键词:
作者姓名:
Shou-Kuan Zhao;Zi-Yong Ge;Zhong-Cheng Xiang;Guang-Ming Xue;Hai-Sheng Yan;Zi-Ting Wang;Zhan Wang;Hui-Kai Xu;Fei-Fan Su;Zhao-Hua Yang;He Zhang;Yu-Ran Zhang;Xue-Yi Guo;Kai Xu;Ye Tian;Hai-Feng Yu;Dong-Ning Zheng;Heng Fan;Shi-Ping Zhao
作者机构:
Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Beijing Academy of Quantum Information Sciences,Beijing 100193,China;Theoretical Quantum Physics Laboratory,RIKEN Cluster for Pioneering Research,Wako-shi,Saitama 351-0198,Japan;CAS Center for Excellence in Topological Quantum Computation,University of Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China
引用格式:
[1]Shou-Kuan Zhao;Zi-Yong Ge;Zhong-Cheng Xiang;Guang-Ming Xue;Hai-Sheng Yan;Zi-Ting Wang;Zhan Wang;Hui-Kai Xu;Fei-Fan Su;Zhao-Hua Yang;He Zhang;Yu-Ran Zhang;Xue-Yi Guo;Kai Xu;Ye Tian;Hai-Feng Yu;Dong-Ning Zheng;Heng Fan;Shi-Ping Zhao-.Measuring Loschmidt echo via Floquet engineering in superconducting circuits)[J].中国物理B(英文版),2022(03):129-133
A类:
Loschmidt,multiqubit
B类:
Measuring,echo,via,Floquet,engineering,superconducting,circuits,useful,diagnostic,quantum,reversal,process,sensitivity,evolution,small,perturbations,main,challenge,measuring,In,this,work,we,demonstrate,measurement,system,using,discuss,imperfection,initial,Bell,state,recovery,arising,from,next,nearest,neighbor,NNN,coupling,present,Our,results,show,that,sensitive,during,contrast,quantities,like,population,often,considered,experiment,These,properties,may,be,employed,investigation,concerning,many,body,decoherence,entanglement,etc,especially,when,devices,reduced,vanishing,used
AB值:
0.514511
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