Entanglement dynamics of two atoms successively passing a cavity  

作　　者：廖庆洪 方光宇 王月媛 M.A.Ahmad 刘树田 

机构地区：[1]Department of Physics,Harbin Institute of Technology [2]Department of Physics,COMSATS Institute of Information Technology

出　　处：《Chinese Optics Letters》2010年第12期1191-1194,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.10974039);the National Basic Research Program of China (No.2006CB302901)

摘　　要：By means of concurrence, we investigate the dynamics of entanglement between two initially separate atoms in succession passing through a cavity and their interaction with a Fock state field. We then analyze the effects of the atomic coherence, photon number, and atomic motion on the time evolution of atom-atom entanglement. The results show that there can be entanglement between two separate atoms, and that the threshold time for the creation of the entanglement is controllable by the photon number, atomic motion, and field-mode structure.By means of concurrence, we investigate the dynamics of entanglement between two initially separate atoms in succession passing through a cavity and their interaction with a Fock state field. We then analyze the effects of the atomic coherence, photon number, and atomic motion on the time evolution of atom-atom entanglement. The results show that there can be entanglement between two separate atoms, and that the threshold time for the creation of the entanglement is controllable by the photon number, atomic motion, and field-mode structure.

关 键 词：PHOTONS 

分 类 号：O431.2[机械工程—光学工程]