Efficient Excitation of a Symmetric Collective Atomic State with a Single-Photon Through Dipole Blockade  

作　　者：洪方昱 熊诗杰 傅景礼 朱志艳 

机构地区：[1]Department of Physics,Center for Optoelectronics Materials and Devices,Zhejiang Sci-Tech University,Xiasha College Park [2]National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University

出　　处：《Communications in Theoretical Physics》2013年第3期365-369,共5页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos. 61076094,11072218,and 11272287;Zhejiang Provincial Natural Science Foundation of China under Grant No. Y6110314;Scientific Research Fund of Zhejiang Provincial Education Department under Grant No. Y200909693

摘　　要：In the famous quantum communication scheme developed by Duan et al.[L.M.Duan,M.D.Lukin,J.I.Cirac,and P.Zoller,Nature(London) 414(2001) 413],the probability of successful generating a symmetric collective atomic state with a single-photon emitted have to be far smaller than 1 to obtain an acceptable entangled state.Based on strong dipole-dipole interaction between two Rydberg atoms,two simultaneous excitations in an atomic ensemble are greatly suppressed,which makes it possible to excite a mesoscopic cold atomic ensemble into a near-ideal singly-excited symmetric collective state accompanied by a signal-photon with near unity success probability.

关 键 词：collective enhancement dipole blockade atomic ensemble SINGLE-PHOTON 

分 类 号：O562[理学—原子与分子物理]