Entanglement Properties Between Two Spatially Separated Atoms with Cascade Configuration in Free Space  

作　　者：杨国晖 张均锋 苗向阳 周玲 

机构地区：[1]Schooi of Physics and Information Engineering,Shanxi Normal University [2]School of Physics and Optoelectronic Technology,Dalian University of Technology

出　　处：《Communications in Theoretical Physics》2010年第3期555-559,共5页理论物理通讯（英文版）

基　　金：Supported by Natural Science Foundation for Young Scientists of Shanxi Province of China under Grant No. 2009021005

摘　　要：We investigate the entanglement properties between two identical atoms with cascade configuration through the retarded dipole-dipole interaction in free space when their spatial separation is on the order of radiation wavelength or less. We analyze the function of Hamiltonian induced by dipole-dipole interaction. By solving master equation, we show that the spontaneous emission induce entanglement and destroy entanglement too. We also show the long life time of entanglement within cascade configuration.

关 键 词：ENTANGLEMENT ATOMS spontaneous emission 

分 类 号：O562[理学—原子与分子物理]