Entanglement dynamics of a double two-photon Jaynes-Cummings model with Kerr-like medium

被引：11
|
作者：
Ouyang Xi-Cheng [1 ,2 ]
Fang Mao-Fa [1 ]
Kang Guo-Dong [1 ]
Deng Xiao-Juan [1 ]
Huang Li-Yuan [3 ]
机构：
[1] Hunan Normal Univ, Coll Phys & Informat Sci, Changsha 410081, Hunan, Peoples R China
[2] Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China
[3] Changsha Univ, Dept Elect & Commun Engn, Changsha 410003, Hunan, Peoples R China
来源：
CHINESE PHYSICS B | 2010年 / 19卷 / 03期
基金：
中国国家自然科学基金;
关键词：
entanglement sudden death; concurrence; two-photon Jaynes-Cummings model; Kerr-like medium; SUDDEN-DEATH; 4-QUBIT MODEL; STARK SHIFT; ATOMS; STATE; TELEPORTATION; EVOLUTION; ENTROPY; FIELD;
D O I：
10.1088/1674-1056/19/3/030309
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, the entanglement dynamics of a double two-photon Jaynes-Cummings model with Kerr-like medium is investigated. It is shown that initial entanglement has an interesting subsequent time evolution, including the so-called entanglement sudden death effect. It is also shown analytically that the Kerr-like medium can repress entanglement sudden death and enhance the degree of atom-atom entanglement. A more interesting fact is that the Kerr effect is more obvious when each of the two cavities with have the Kerr-like medium than only one of them with the Kerr-like medium.
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收藏
页数：6
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