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.
Received: 15 November 2008
Revised: 07 January 2009
Accepted manuscript online:
PACS:
03.65.Ud
(Entanglement and quantum nonlocality)
Fund: 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).
Cite this article:
Deng Xiao-Juan(邓小娟), Fang Mao-Fa(方卯发), and Kang Guo-Dong(康国栋) Entanglement dynamics between an isolated atom and a moving atom in the cavity 2009 Chin. Phys. B 18 4100
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