基于光纤连接的耦合腔量子电动力学系统中三体纠缠动力学  

Tripartite Entanglement Dynamics in the Coupled Cavities Quantum Electrodynamics System via Optical Fibers

作　　者：卢道明[1] 邱昌东[1] 

机构地区：[1]武夷学院机电工程学院,福建武夷山354300

出　　处：《光学学报》2015年第12期31-37,共7页Acta Optica Sinica

基　　金：福建省自然科学基金(2015J01020);福建省教育厅A类科技项目(JA12327)

摘　　要：考虑腔场初始处于弱相干场的情况,采用三体纠缠的张量计算法来度量三原子间的纠缠,研究了基于光纤连接的耦合腔量子电动力学系统中原子间三体纠缠动力学。通过数值计算讨论了腔-光纤耦合强度变化,以及弱相干场强度变化对原子间三体纠缠特性的影响。研究结果表明:随腔模和光纤模间耦合系数增大,原子间三体纠缠减弱。另一方面,随弱相干场强度增大,原子间的三体纠缠增强。Cavities initially in weak coherent states are considered. The entanglement tensor approach is used to quantify the degree of entanglement. The tripartite entanglement dynamics of the system comprising three twolevel atoms resonantly interacting with three cavities coupled by two optical fibers is studied. The influence of cavity-fiber coupling constant on the tripartite entanglement among atoms and the influence of intensity of the cavity field on that are discussed. The tripartite entanglement among atoms is weakened with coupling constant between cavity and fiber increasing. On the other hand, it is strengthened with intensity of the cavity field increasing.

关 键 词：量子光学 二能级原子 光纤耦合腔系统 三体纠缠动力学 

分 类 号：O431.2[机械工程—光学工程]