Consequent entanglement concentration of a less-entangled electronic cluster state with controlled-not gates

作     者：周澜 

作者机构：College of Mathematics & PhysicsNanjing University of Posts and Telecommunications Key Laboratory of Broadband Wireless Communication and Sensor Network Technology of the Ministry of EducationNanjing University of Posts and Telecommunications 

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

年 卷 期：2014年第23卷第5期

页      面：91-95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 11347110) the Open Research Fund of Key Lab of Broadband Wireless Communication and Sensor Network Technology of the Ministry of Education,Nanjing University of Posts and Telecommunications,China(Grant No.NYKL201303) the Scientific Research Foundation of Nanjing University of Posts and Telecommunications,China(Grant No.NY213054) the Priority Academic Program Development of Jiangsu Higher Education Institutions,China 

主　　题：quantum communication entanglement entanglement concentration 

摘      要：We present a highly efficient entanglement concentration protocol （ECP） for a four-electron system in a less-entangled cluster state. In this ECP, we only require one pair of less-entangled electron cluster states and one ancillary electron to complete the task. With the help of the controlled-not （CNOT） gate, the concentrated maximally entangled state can be retained for further application with some success probability. On the other hand, the discarded items can be reused to obtain a high success probability. All the features make this ECP useful in the current quantum information field.