Kerr介质中双模SU(1,1)相干态场与三能级原子的量子纠缠

J4 ›› 2009, Vol. 26 ›› Issue (5): 577-584.

Kerr介质中双模SU(1,1)相干态场与三能级原子的量子纠缠

王青狮郭云香赖云忠

太原科技大学物理系, 太原 030024

出版日期:2009-09-28 发布日期:2009-08-27
通讯作者: 郭云香 (1983-)，女，河南南阳人，太原科技大学硕士生，主要研究方向为光与物质的相互作用。 E-mail:xiangyun0351@163.com
作者简介:王青狮 (1957－)，男，山西万荣县人，太原科技大学副教授，硕士生导师，主要研究方向为光学。E-mail: qingshi.w@sohu.com

Quantum entanglement of two-mode SU(1,1) coherent states with three-level atoms in a Kerr-like-medium

WANG Qing-Shi, GUO Yun-Xiang, LAI Yun-Zhong

Department of Physics，Taiyuan University of Science and Technology，taiyuan 030024，China

Published:2009-09-28 Online:2009-08-27

摘要/Abstract

摘要：

研究了在高Q Kerr介质腔中，关联双模SU(1,1)相干态场与V型、 ?型和型三能级原子相互作用的量子纠缠性质。采用数值计算方法，详细讨论了Kerr效应对模场和原子之间纠缠程度的影响。研究发现在高Q Kerr介质腔中，模场与原子之间的纠缠受到Kerr效应影响的规律是一致的，在介质参数达到一定值前，模场与原子之间的纠缠随介质参数的增大而增大，超过这一定值后反而会降低它们之间的纠缠。

关键词: 三能级原子, 双模SU(1,1)相干态场, Kerr介质腔, 量子纠缠

Abstract:

The quantum entanglement of three-level atoms ,which include a V-type three-level atom, a ?-type three-level atom and a -type three-level atom, interacting with two-mode SU(1,1) coherent states in a Kerr-like medium is studied. By numerical method, the influences of field parameters and Kerr effect on the quantum entanglement are discussed in detail. The study shows the laws of the three type atoms are coincident with the effect of Kerr, before the parameter of Kerr reaches a certain value the quantum entanglement increases rapidly with the increasing of it. However ,the quantum entanglement is reduced when the parameter over the certain value .

Key words: three-level atoms, two-mode SU(1,1) coherent states, Kerr-like medium, quantum entanglement

王青狮郭云香赖云忠. Kerr介质中双模SU(1,1)相干态场与三能级原子的量子纠缠[J]. J4, 2009, 26(5): 577-584.

WANG Qing-Shi, GUO Yun-Xiang, LAI Yun-Zhong. Quantum entanglement of two-mode SU(1,1) coherent states with three-level atoms in a Kerr-like-medium[J]. J4, 2009, 26(5): 577-584.

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