Protocols of quantum key agreement solely using Bell states and Bell measurement
Protocols of quantum key agreement solely using Bell states and Bell measurement
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DOI：
10.1007/s11128-014-0784-0
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发表时间：
2014-07
影响因子：
2.5
通讯作者：
Chitra Shukla;Nasir Alam;Anirban Pathak
中科院分区：
文献类型：
--
作者：
Chitra Shukla;Nasir Alam;Anirban Pathak
提出了两种基于正交状态的量子密钥协商（QKA）协议。这里提出的QKA第一个协议是为双方QKA设计的，而第二个协议是为多方QKA设计的。这些基于正交状态的协议的安全性源于纠缠的一夫一妻制。这与现有的 QKA 协议形成鲜明对比，QKA 的安全性来自于使用非正交状态（非交换性原理）。此外，研究还表明，所有可用于实现量子对话的量子系统和大多数安全直接量子通信协议都可以修改以实现 QKA 协议。
Two orthogonal-state-based protocols of quantum key agreement (QKA) are proposed. The first protocol of QKA proposed here is designed for two-party QKA, whereas the second protocol is designed for multi-party QKA. Security of these orthogonal-state-based protocols arise from monogamy of entanglement. This is in contrast to the existing protocols of QKA where security arises from the use of non-orthogonal state (non-commutativity principle). Further, it is shown that all the quantum systems that are useful for implementation of quantum dialogue and most of the protocols of secure direct quantum communication can be modified to implement protocols of QKA.