Self-error-rejecting multipartite entanglement purification for electron systems assisted by quantum-dot spins in optical microcavities

作     者：Yong-Ting Liu Yi-Ming Wu Fang-Fang Du 刘永婷;吴一鸣;杜芳芳

作者机构：Science and Technology on Electronic Test and Measurement LaboratoryNorth University of ChinaTaiyuan 030051China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2022年第31卷第5期

页      面：113-121页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0702[理学-物理学] 

基　　金：Project supported in part by the National Natural Science Foundation of China(Grant No.61901420) the Shanxi Provincial Science Foundation for Youths(Grant No.201901D211235) the Scientific and Technological Innovation Program of Higher Education Institutions of Shanxi Province,China(Grant No.2019L0507) 

主　　题：quantum communication entanglement purification electron-spin system 

摘      要：We present a self-error-rejecting multipartite entanglement purification protocol(MEPP)for N-electron-spin entangled states,resorting to the single-side cavity-spin-coupling *** MEPP has a high efficiency containing two *** is to obtain high-fidelity N-electron-spin entangled systems with error-heralded parity-check devices(PCDs)in the same parity-mode outcome of three electron-spin pairs,as well as M-electron-spin entangled subsystems(2≤MN)in the different parity-mode outcomes of *** other is to regain the N-electron-spin entangled systems from Melectron-spin entangled states utilizing entanglement ***,the quantum circuits of PCDs make our MEPP works faithfully,due to the practical photon-scattering deviations from the finite side leakage of the microcavity,and the limited coupling between a quantum dot and a cavity mode,converted into a failed detection in a heralded way.