Novel Multiparty Controlled Bidirectional Quantum Secure Direct Communication Based on Continuous-variable States

被引:15
作者
Yu, Zhen-Bo [1 ]
Gong, Li-Hua [2 ]
Wen, Ru-Hong [3 ]
机构
[1] Nanchang Univ, Dept Phys, Nanchang 330031, Peoples R China
[2] Nanchang Univ, Dept Elect Informat Engn, Nanchang 330031, Peoples R China
[3] Yichun Univ, Colloge Phys Sci & Technol, Yichun 336000, Peoples R China
基金
中国国家自然科学基金;
关键词
Multiparty; Continuous-variable state; Qubit block transmission; Quantum secure direct communication; DETERMINISTIC SECURE; KEY DISTRIBUTION; PROTOCOL; IMPROVEMENT; DIALOGUE;
D O I
10.1007/s10773-015-2784-y
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A novel multiparty controlled bidirectional quantum secure direct communication protocol combining continuous-variable states with qubit block transmission is proposed. Two legitimate communication parties encode their own secret information into entangled optical modes with translation operations, and the secret information of each counterpart can only be recovered under the permission of all controllers. Due to continuous-variable states and block transmission strategy, the proposed protocol is easy to realize with perfect qubit efficiency. Security analyses show that the proposed protocol is free from common attacks, including the man-in-the-middle attack.
引用
收藏
页码:1447 / 1459
页数:13
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