Entanglement in a system of two two-level atoms interacting with a single-mode field

被引：0

作者：

Jin Li-Juan ^{[1
]}

Fang Mao-Fa ^{[1
]}

机构：

[1] Hunan Normal Univ, Coll Phys & Informat Sci, Changsha 410081, Peoples R China

来源：

CHINESE PHYSICS | 2006年 / 15卷 / 09期

关键词：

quantum entanglement; reduced entropy; relative entropy; JAYNES-CUMMINGS MODEL; STATES;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the entanglement in a system of two coupling atoms interacting with a single-mode field by means of quantum information entropy theory. The quantum entanglement between the two atoms and the coherent field is discussed by using the quantum reduced entropy, and the entanglement between the two coupling atoms is also investigated by using the quantum relative entropy. In addition, the influences of the atomic dipole-dipole interaction intensity and the average photon number of the coherent field on the degree of the entanglement is examined. The results show that the evolution of the degree of entanglement between the two atoms and the field is just opposite to that of the degree of entanglement between the two atoms. And the properties of the quantum entanglement in the system rely on the atomic dipole-dipole interaction and the average photon number of the coherent field.

引用

页码：2012 / 2017

页数：6

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