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Revisiting Symmetric Incoherent Optimal Eavesdropping in BB84 Protocol
Bias Advantage BB84 Protocol Key Distribution Optimal Eavesdropping Quantum Communication Quantum Cryptography Sequence
2012/3/22
The famous BB84 protocol relies on the conjugate bases $Z=\{|0\rangle$, $|1\rangle\}$ and $X=\left\{|+\rangle,|-\rangle\right\}$, where $|+\rangle = \frac{|0 \rangle + |1\rangle}{\sqrt{2}}$ and $|-\ra...
Revisiting Symmetric Incoherent Optimal Eavesdropping in BB84 Protocol
Bias Advantage BB8 Protocol Key Distribution Optimal Eavesdropping Quantum Communication Quantum Cryptography Sequence
2012/3/21
The famous BB84 protocol relies on the conjugate bases $Z=\{|0\rangle$, $|1\rangle\}$ and $X=\left\{|+\rangle,|-\rangle\right\}$, where $|+\rangle = \frac{|0 \rangle + |1\rangle}{\sqrt{2}}$ and $|-\ra...
结合高效BB84协议的差分密钥分发系统
量子密码 量子密钥分发 相位编码
2009/8/13
提出一种新的相位编码方案,使用差分和高效BB84协议实现量子密钥分发.在保留差分编码优势的同时,此方案进一步增加系统的安全性.Alice端随机选择{0,π/2,π,3π/2}中的相位对信号脉冲进行调制,Bob端随机选择{0,π/2}中的相位对信号脉冲进行调制.为了提高成码率和简化系统,以η(η→1)的概率选取{0,π} 基对相位进行调制,此时系统运行差分编码,用于生成密钥;以(1－η)的概率选取{...