物理学报2012，Vol.61Issue(21)：225-231,7.
基于GHZ态的三方量子确定性密钥分配协议
Tripartite quantum deterministic key distribution based on GHZ states
摘要
Abstract
By exploiting the entanglement properties of continuous variable quantum GHZ state, we propose a tripartite quantum deterministic key distribution, in which the key is generated from its amplitude and the phase can be used to test and verify the channel security. The existing quantum deterministic key distribution can only hand over deterministic key to one receiver in one communication. However, we always have to transmit deterministic key to more than one receiver in real life. The analysis results of information theory show that when the channel transmission efficiency is greater than 0.5, the proposed protocol can securely hand over the pre-deterministic key to two receivers simultaneously, and it can also be extended to multiparty quantum deterministic key distribution when preparing multiple entangled state, this will greatly improve the overall efficiency of the key transmission, furthermore, the continuous variable quantum GHZ state could have a higher channel capacity, so the protocol has the important practical significance.关键词
连续变量GHZ态/量子确定性密钥分配/密钥管理/量子通信Key words
continuous-variable/quantum deterministic key distribution/key management/quantum communication分类
数理科学引用本文复制引用
周南润,宋汉冲,龚黎华,刘晔..基于GHZ态的三方量子确定性密钥分配协议[J].物理学报,2012,61(21):225-231,7.基金项目
国家自然科学基金,(批准号：11174118) （批准号：11174118）
江西省自然科学基金,(批准号：20122BAB201031) （批准号：20122BAB201031）
江西省教育厅科技项目,(批准号：GJJ11339,GJJ12137)和江西省青年科学家,(井冈之星)培养对象计划项目,(批准号：20122BCB23002)资助的课题. （批准号：GJJ11339,GJJ12137）
