Entanglement Purification Through Cavity Input-Output Process  

作　　者：ZHANG Xiao-Long FENG Mang GAO Ke-Lin 

机构地区：[1]Center for Modern Physics and Department of Physics, Chongqing University, Chongqing 400044, China [2]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences, Wuhan 430071, China

出　　处：《Communications in Theoretical Physics》2008年第8期355-358,共4页理论物理通讯（英文版）

基　　金：supported by National Natural Science Foundation of China under Grant Nos.10774163,10774042,and 10747167;the State Key Basic Research Program of China under Grant Nos.2005CB724502 and 2006CB921203

摘　　要：We propose a scheme to purify entanglement of two atoms from not-too-impure entangled states by checking the parity of the two atoms through the cavity input-output process. As the parity check is made by measurement on single-photon polarization, which would not affect the entanglement of the two atoms, our scheme has the successful probability double of that in a previous well-known scheme with linear optical elements [Nature （London） 410 （2001） 1067], and is insensitive to the photon loss and the detection inefficieney. Experimental feasibility of our scheme with current technology is discussed.

关 键 词：entanglement purification cavity QED SINGLE-PHOTON cavity input-output process 

分 类 号：O43[机械工程—光学工程]