Security of continuous-variable quantum cryptography using coherent states: Decline of postselection advantage
Security of continuous-variable quantum cryptography using coherent states: Decline of postselection advantage
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DOI：
10.1103/physreva.72.024301
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发表时间：
2005-06
影响因子：
2.9
通讯作者：
R. Namiki;T. Hirano
中科院分区：
文献类型：
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作者：
R. Namiki;T. Hirano
研究了在存在正交过剩噪声的情况下，使用相干态的连续变量(CV)量子密钥分配(QKD)的安全性。我们考虑一种使用线性放大器和分束器的窃听攻击。这种攻击将分束攻击和截取-重发攻击(经典的隐形传态攻击)联系起来。我们还展示了后选择如何在现实渠道中失去效率。
We investigate the security of continuous-variable (CV) quantum key distribution (QKD) using coherent states in the presence of quadrature excess noise. We consider an eavesdropping attack that uses a linear amplifier and a beam splitter. This attack makes a link between the beam-splitting attack and the intercept-resend attack (classical teleportation attack). We also show how postselection loses its efficiency in a realistic channel.