Controlled Bidirectional Quantum Direct Communication by Using a GHZ State  

作　　者：满忠晓 夏云杰 

机构地区：[1]College of Physics and Engineering, Qufu Normal University, Qufu 273165

出　　处：《Chinese Physics Letters》2006年第7期1680-1682,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10534030 and 10304022.

摘　　要：A controlled bidirectional quantum secret direct communication scheme is proposed by using a Greenberger- Horne-Zeilinger （GHZ） state. In the scheme, two users can exchange their secret messages simultaneously with a set of devices under the control of a third party. The security of the scheme is analysed and confirmed.A controlled bidirectional quantum secret direct communication scheme is proposed by using a Greenberger- Horne-Zeilinger （GHZ） state. In the scheme, two users can exchange their secret messages simultaneously with a set of devices under the control of a third party. The security of the scheme is analysed and confirmed.

关 键 词：SECURE DIRECT COMMUNICATION WOJCIKS EAVESDROPPING ATTACK PING-PONGPROTOCOL ENTANGLEMENT CRYPTOGRAPHY SCHEME 

分 类 号：O413[理学—理论物理] TN918[理学—物理]