Optimal entanglement concentration for three-photon W states with parity check measurement

作     者：周澜 盛宇波 赵生妹 

作者机构：College of Mathematics & PhysicsNanjing University of Posts and Telecommunications Key Laboratory of Broadband Wireless Communication and Sensor Network TechnologyNanjing University of Posts and Telecommunications Ministry of Education National Laboratory of Solid State MicrostructuresNanjing University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2013年第22卷第2期

页      面：97-104页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 11104159 and 61271238) the Scientific Research Foundation of Nanjing University of Posts and Telecommunications (Grant No. NY211008) the Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics,Tsinghua University,the Open Research Fund Program of National Laboratory of Solid State Microstructures,Nanjing University,(Grant Nos. M25020 and M25022) the University Natural Science Research Foundation of Jiangsu Province (Grant No. 11KJA510002) the Open Research Fund of the Key Laboratory of Broadband Wireless Communication and Sensor Network Technology,Nanjing University of Posts and Telecommunications,Ministry of Education,China the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions 

主　　题：quantum communication entanglement entanglement concentration 

摘      要：We present an efficient entanglement concentration protocol（ECP） for the less-entangled W state with some identical conventional polarized single *** the protocol,two of the parties say Alice and Charlie should perform the parity check measurements and they can ultimately obtain the maximally entangled W state with a certain success ***,they can obtain another less-entangled W state,which can be reconcentrated into the maximally entangled W *** iterating this ECP,a high success probability can be *** ECP may be an optimal one and it is useful in current quantum information processing.