Entanglement generation in atoms immersed in a thermal bath of external quantum scalar fields with a boundary

被引:37
作者
Zhang, Jialin
Yu, Hongwei
机构
[1] CCAST, World Lab, Beijing 100080, Peoples R China
[2] Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China
[3] Hunan Normal Univ, Inst Phys, Changsha 410081, Hunan, Peoples R China
来源
PHYSICAL REVIEW A | 2007年 / 75卷 / 01期
关键词
D O I
10.1103/PhysRevA.75.012101
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We examine the entanglement creation between two mutually independent two-level atoms immersed in a thermal bath of quantum scalar fields in the presence of a perfectly reflecting plane boundary. With the help of the master equation that describes the evolution in time of the atom subsystem obtained, in the weak-coupling limit, by tracing over environment (scalar fields) degrees of freedom, we find that the presence of the boundary may play a significant role in the entanglement creation in some circumstances and the new parameter, the distance of the atoms from the boundary, besides the bath temperature and the separation between the atoms, gives us more freedom in manipulating entanglement generation. Remarkably, the final remaining entanglement in the equilibrium state is independent of the presence of the boundary.
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页数:8
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