论文标题
带有三态系统的相匹配量子密钥分布协议
The phase matching quantum key distribution protocol with 3-state systems
论文作者
论文摘要
量子密钥分布作为密码学中量子力学的一个分支，可以以无条件安全的方式在法律通信方之间分发钥匙，因此可以在以无条件安全性传输机密信息时实现。我们首次考虑使用三态系统的相匹配量子密钥分布协议，其中相干状态的阶段为3，因此我们提出了三种不同的方法来响应每个成功检测，两个方面通过“翻转和翻转”获得了原始键。仿真结果表明，与相位匹配的量子键分布协议相比，该方案等于2，所提出的协议破坏了较短距离的线性密钥生成速率的极限，而最长的实际传输距离约为470 $ km $，而BB84协议的协议则低于250 $ $ $。
Quantum Key Distribution, as a branch of quantum mechanics in cryptography, can distribute keys between legal communication parties in an unconditionally secure manner, thus can realize in transmitting confidential information with unconditional security. We consider a Phase-Matching Quantum Key Distribution protocol with 3-state systems for the first time, where the phase of the coherent state is 3,thus we propose three different ways to response to every successful detection and two parties gain their raw keys by "flip and flip". The simulation results show that compared with Phase-Matching Quantum Key Distribution protocol where the phase equals 2, the proposed protocol breaks the limit of linear key generation rate in a shorter distance, and the longest practical transmission distance is about 470 $km$, whereas the ones of BB84 protocol is lower than 250 $km$.
