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.

引用

页数：6

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