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Quantum Entanglement in a System of Two Spatially Separated Atoms Coupled to the Thermal Reservoir
作者姓名:廖湘萍  方卯发  郑小娟  蔡建武
作者单位:[1]Department of Physics, Hunan Normal University, Changsha 410081 [2]Department of Physics and Electronics, Zhuzhou Teachers' College, Zhuzhou 412007 [3]Department of Physics, Hunan Industrial University, Zhuzhou 412000
基金项目:Supported by the National Natural Science Foundation of China under Grant No 10374025, the Hunan Provincial Natural Science Foundation under Grant No 06JJ20014, and the Young Scientific Research Foundation of Hunan Provincial Education Department under Grand No 04B070.
摘    要:

关 键 词:量子纠缠  独立空间  热场  混合态  全同原子  非全同原子
收稿时间:2006-06-06
修稿时间:2006-06-06

Quantum Entanglement in a System of Two Spatially Separated Atoms Coupled to the Thermal Reservoir
LIAO Xiang-Ping,FANG Mao-Fa,ZHENG Xiao-Juan&sup,CAI Jian-Wu.Quantum Entanglement in a System of Two Spatially Separated Atoms Coupled to the Thermal Reservoir[J].Chinese Physics Letters,2006,23(12):3138-3142.
Authors:LIAO Xiang-Ping  FANG Mao-Fa  ZHENG Xiao-Juan&sup  CAI Jian-Wu
Abstract:We study quantum entanglement between two spatially separated atoms coupled to the thermal reservoir. The influences of the initial state of the system, the atomic frequency difference and the mean number of the thermal field on the entanglement are examined. The results show that the maximum of the entanglement obtained with nonidentical atoms is greater than that obtained with identical atoms. The degree of entanglement is progressively decreased with the increase of the thermal noise. Interestingly, the two atoms can be easily entangled even when the two atoms are initially prepared in the most mixed states.
Keywords:03  65  Ud  03  67  Mn  03  65  Yz
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