原子与耦合腔相互作用系统中的纠缠特性  

Entanglement properties in the system of atoms interacting with coupled cavities

作　　者：卢道明[1] 

机构地区：[1]武夷学院电子工程系,武夷山354300

出　　处：《物理学报》2011年第9期67-72,共6页Acta Physica Sinica

基　　金：福建省自然科学基金(批准号:2008J0217)资助的课题~~

摘　　要：本文研究将两个二能级原子分别注入耦合腔A和B中,并且原子与腔场发生共振相互作用的情况.采用Negativity熵度量两子系统间的纠缠,利用数值计算方法研究了两个原子之间、腔内原子与腔场之间和两个腔场之间的纠缠性质.讨论了腔场间的耦合强度对纠缠特性的影响.研究结果表明:随腔场间耦合的增强,两原子间的纠缠增强,而原子与腔场间和两腔场间的纠缠减弱.We study the entanglement dynamics of the system composed of two two-level atoms resonantly interacting with two coupled cavities. The evolutions of atom-atom entanglement, cavity-cavity entanglement and atom-cavity entanglement are investigated. The influence of coupling constant between cavities on entanglement property is discussed. The numerical results show that atom-atom entanglement property is strengthened while atom-cavity entanglement property and cavity-cavity entanglement property are weakened with the increasing of the coupling constant between cavities.

关 键 词：量子光学 二能级原子 耦合腔 量子纠缠 

分 类 号：O431.2[机械工程—光学工程]