Two-Way Cooperative Quantum Communication with Partial Entanglement Analysis  

作　　者：Yunkai Deng Zhujun Gao Ying Guo 

机构地区：[1]Central South University

出　　处：《ZTE Communications》2013年第3期36-40,共5页中兴通讯技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(60902044,61172184);the New Century Excellent Talents in University(NCET-11-0510);partly by the World Class University R32-2010-000-20014-0NRF;Fundamental Research 2010-0020942 NRF,Korea

摘　　要：In this paper, we describe an improved cooperative two-way quantum communication scheme that works in a forward-and-backward fashion. In this scheme, partial entanglement analysis based on five-qubit entangled Brown state allows for the simultaneous exchange of arbitrary unknown states between Alice and Bob （with the help of trusted Charlie）. Security is guaranteed because opposing unknown states are transmitted by performing the suitable recovery operations in a deterministic way or, in the case of irregularities, no results are generated. The current two-way quantum communication scheme can also be extended to transmit arbitrary unknown states. This is done in a probabilistic way by using two-way quantum teleportation based on the generalized Brown-like state.In this paper, we describe an improved cooperative two-way quantum communication scheme that works in a forward-and-backward fashion. In this scheme, partial entanglement analysis based on five-qubit entangled Brown state allows for the simultaneous exchange of arbitrary unknown states between Alice and Bob （with the help of trusted Charlie）. Security is guaranteed because opposing unknown states are transmitted by performing the suitable recovery operations in a deterministic way or, in the case of irregularities, no results are generated. The current two-way quantum communication scheme can also be extended to transmit arbitrary unknown states. This is done in a probabilistic way by using two-way quantum teleportation based on the generalized Brown-like state.

关 键 词：quantum teleportation two-way communication brown state bell states ENTANGLEMENT 

分 类 号：TN918[电子电信—通信与信息系统] O413[电子电信—信息与通信工程]