| A Simultaneous Quantum Secure Direct Communication Scheme between the Central Party and Other M Parties |
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| 作者姓名： | 高亭 闫凤利 王志玺 |
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| 作者单位： | [1]College of Mathematics and Information Science, Hebei Normal University, Shijiazhuang 050016 [2]Department of Mathematics, Capital Normal University, Beijing 100037 [3]CCAST （World Laboratory）, PO Box 8730, Beijing 100080 [4]College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016 |
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| 基金项目： | Supported by the Natural Science Foundation of Hebei Province under Grant Nos A2004000141 and A2005000140, and the Natural Science Foundation of Hebei Normal University. |
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| 摘 要： | We propose a simultaneous quantum secure direct communication scheme between one party and other three parties via four-particle GHZ states and swapping quantum entanglement. In the scheme, three spatially separated senders, Alice, Bob and Charlie, transmit their secret messages to a remote receiver Diana by performing a series of local operations on their respective particles according to the quadripartite stipulation. From Alice, Bob, Charlie and Diana＇s Bell measurement results, Diana can infer the secret messages. Ira perfect quantum channel is used, the secret messages are faithfully transmitted from Alice, Bob and Charlie to Diana via initially shared pairs of four-particle GHZ states without revealing any information to a potential eavesdropper. As there is no transmission of the qubits carrying the secret message in the public channel, it is completely secure for the direct secret communication. This scheme can be considered as a network of communication parties where each party wants to communicate secretly with a central party or server.
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| 关 键 词： | 通信网络 信息传递 信息安全 公共通信 |
| 收稿时间： | 2005-06-14 |
| 修稿时间： | 2005-06-14 |
A Simultaneous Quantum Secure Direct Communication Scheme between the Central Party and Other M Parties |
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| Gao Ting;Yan FengLi;Wang ZhiXi.A Simultaneous Quantum Secure Direct Communication Scheme between the Central Party and Other M Parties[J].Chinese Physics Letters,2005,22(10):2473-2476. |
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| Authors: | Gao Ting;Yan FengLi;Wang ZhiXi |
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