论文标题
使用单个光子添加提取的挤压相干状态的量子键分布
Quantum key distribution using single photon added-subtracted squeezed coherent state
论文作者
论文摘要
在本文中，我们使用添加的单个光子然后减去挤压的相干状态spasscs研究了连续变量BB84量子键分布协议的安全性。发现spasscs是一种非高斯和非古典状态。它的非高斯和非古典性通过Wigner函数展示。结果表明，拟议的状态通常对窃听策略（例如拦截式攻击和上等渠道攻击）具有强大的态度。此外，一项比较研究证明了拟议状态比连贯状态的强大效率，挤压相干状态和添加的光子随后减去相干状态。我们的分析采用了位错误率，共同信息和安全的密钥增益。
In this paper we investigate the security of continuous variable BB84 quantum key distribution protocol using single photon added then subtracted squeezed coherent state SPASSCS. It's found that the SPASSCS is a non-Gaussian and nonclassical state. Its non-Gaussianity and non-classicality are exhibited via the Wigner function. It's shown that the proposed state is generally robust against the eavesdropping strategies, such as intercept-resend attack and superior channel attack. Further, a comparative study has proved the strong efficiency of the proposed state over coherent state, squeezed coherent state and photon added then subtracted coherent state. Our analysis employs bit error rate, mutual information, and secure key gain.
