Engineering Knill–Laflamme–Milburn Entanglement via Dissipation and Coherent Population Trapping in Rydberg Atoms  

作　　者：李芮 何爽 孟枳君 金钊 公卫江 Rui Li;Shuang He;Zhi-Jun Meng;Zhao Jin;Wei-Jiang Gong(College of Sciences,Northeastern University,Shenyang 110819,China;Aviation University of Air Force,Changchun 130022,China;NCO School,Army Academy of Artillery and Air Defense,Shenyang 110867,China)

机构地区：[1]College of Sciences,Northeastern University,Shenyang 110819,China [2]Aviation University of Air Force,Changchun 130022,China [3]NCO School,Army Academy of Artillery and Air Defense,Shenyang 110867,China

出　　处：《Chinese Physics Letters》2023年第6期8-12,共5页中国物理快报（英文版）

基　　金：the LiaoNing Revitalization Talents Program(Grant No.XLYC1907033);the Natural Science Foundation of Liaoning Province(Grant No.2023-MS-072);the National Natural Science Foundation of China(Grant No.11905027);the Fundamental Research Funds for the Central Universities(Grant Nos.N2209005 and N2205015)。

摘　　要：We present a scheme for dissipatively preparing bipartite Knill–Laflamme–Milburn(KLM)entangled state in a neutral atom system,where the spontaneous emission of excited Rydberg states,combined with the coherent population trapping,is actively exploited to engineer a steady KLM state from an arbitrary initial state.Instead of commonly used antiblockade dynamics of two Rydberg atoms,we particularly utilize the Rydberg–Rydberg interaction as the pumping source to drive the undesired states so that it is unnecessary to satisfy a certain relation with laser detuning.The numerical simulation of the master equation signifies that both the fidelity and the purity above 98%is available with the current feasible parameters,and the corresponding steady-state fidelity is robust to the variations of the dynamical parameters.

关 键 词：RYDBERG satisfy utilize 

分 类 号：O413[理学—理论物理]