Arbitrary Partially Entangled Three-Electron W State Concentration with Controlled-Not Gates  

作　　者：盛宇波 冯兆峯 欧阳阳 屈长城 周澜 

机构地区：[1]Key Lab of Broadband Wireless Communication and Sensor Network Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003 [2]College of Mathematics and Physics, Nanjing University of Posts and Telecommunications, Nanjing 210003

出　　处：《Chinese Physics Letters》2014年第5期9-12,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11104159, 11347110 and 61201164, and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.

摘　　要：We describe an efficient entanglement concentration protocol （ECP） for an arbitrary partially entangled threeelectron W state. We show that with the help of two ancillary single electrons, the concentration task can be well completed. This ECP has several advantages： Firstly, we only require one pair of partially entangled states. Secondly, only two single electrons are used during the whole protocol. Thirdly, we do not require all the parties to participate in the whole process, and only two parties are needed to perform the operation. Fourthly, the protocol can 5e repeated to obtain a high success probability. This ECP may be useful in current quantum computation and quantum communication.We describe an efficient entanglement concentration protocol （ECP） for an arbitrary partially entangled threeelectron W state. We show that with the help of two ancillary single electrons, the concentration task can be well completed. This ECP has several advantages： Firstly, we only require one pair of partially entangled states. Secondly, only two single electrons are used during the whole protocol. Thirdly, we do not require all the parties to participate in the whole process, and only two parties are needed to perform the operation. Fourthly, the protocol can 5e repeated to obtain a high success probability. This ECP may be useful in current quantum computation and quantum communication.

分 类 号：O413.1[理学—理论物理] O482.4[理学—物理]