提出了一种基于双模压缩态的量子密钥分发方案,采用Shannon信息论分析了该协议抵抗光束分离攻击的能力,得到秘密信息速率与压缩因子、信道参数之间的解析表达式,双模压缩态的模间关联性保证了该方案的安全性.
A quantum key distribution scheme using two-mode squeezed states is proposed in this paper.The security of the proposed scheme against beam splitter attack is analyzed using Shannon information theory.The analytical expression of the secret information rate is given in terms of squeezed factor and channel parameters.The mode-mode correlation of two-mode squeezed states guarantees the security of the proposed scheme.