中国物理B ›› 2009, Vol. 18 ›› Issue (10): 4100-4104.doi: 10.1088/1674-1056/18/10/006

• GENERAL • 上一篇    下一篇

Entanglement dynamics between an isolated atom and a moving atom in the cavity

邓小娟, 方卯发, 康国栋   

  1. College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2008-11-15 修回日期:2009-01-07 出版日期:2009-10-20 发布日期:2009-10-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025), the Natural Science Foundation of Hunan Province, China (Grant No 07JJ3013) and the Education Ministry of Hunan Province, China (Grant No 06A038).

Entanglement dynamics between an isolated atom and a moving atom in the cavity

Deng Xiao-Juan(邓小娟), Fang Mao-Fa(方卯发)†, and Kang Guo-Dong(康国栋)   

  1. College of Physics and Information Science, Hunan Normal University, Changsha 410081, China
  • Received:2008-11-15 Revised:2009-01-07 Online:2009-10-20 Published:2009-10-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10374025), the Natural Science Foundation of Hunan Province, China (Grant No 07JJ3013) and the Education Ministry of Hunan Province, China (Grant No 06A038).

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摘要： The entanglement dynamics between an isolated atom and a moving atom interacting with a cavity field is investigated. The results show that there appears sudden death of entanglement between the isolated atom and the moving atom and that the time of entanglement sudden death (ESD) is independent of the initial state of the system. It is interesting that the isolated atom can also entangle with a cavity field, though they do not interact with each other originally, which stems from the fact that the entanglement between the isolated atom and the moving atom may turn into the entanglement between the isolated atom and the cavity.

Abstract: The entanglement dynamics between an isolated atom and a moving atom interacting with a cavity field is investigated. The results show that there appears sudden death of entanglement between the isolated atom and the moving atom and that the time of entanglement sudden death (ESD) is independent of the initial state of the system. It is interesting that the isolated atom can also entangle with a cavity field, though they do not interact with each other originally, which stems from the fact that the entanglement between the isolated atom and the moving atom may turn into the entanglement between the isolated atom and the cavity.

Key words: entanglement, sudden death, transfer

中图分类号:  (Entanglement and quantum nonlocality)

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