Two-party quantum key agreement with four-qubit cluster states

Two-party quantum key agreement with four-qubit cluster states
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具有四量子位簇状态的两方量子密钥协议

DOI:
10.1007/s11128-014-0785-z
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发表时间:
2014-07
影响因子:
2.5
通讯作者:
Wang Li-Li
Wang Li-Li
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Shen Dong-Su;Ma Wen-Ping;Wang Li-Li

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基于四量子比特簇态,我们提出了一种使用幺正运算的两方量子密钥协议方案。在该方案中,两个参与者对具有相同集群状态的不同光子进行统一操作,保证了双方对协议密钥的贡献相同。通过测量每个簇的状态和解码,这两个参与者可以生成一个4位的经典密钥,而不需要交换经典比特。与现有的两方QKA协议相比,我们的方案是高效的。安全性分析表明,我们的协议对参与者和外部攻击都是安全的。
Based on four-qubit cluster states, we present a two-party quantum key agreement (QKA) scheme using unitary operations. In this scheme, two participants perform the unitary operation on the different photon of the same cluster state, which guarantees that each party contributes equally to the agreement key. By measuring each cluster state and decoding, these two participants can generate a four-bit classical key without the exchange of classical bits between them. Compared with other existed two-party QKA protocols, our scheme is efficient. Security analysis shows that our protocol is secure against both participant and outsider attack.
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