量子通信技术

Technique on Quantum Communication

介绍以光学系统来实现量子密码通信的原理和实验。以双狭缝量子干涉实验为例说明光子的波粒二象性,量子纠缠现象。简要介绍纠缠光子对和Bell不等式,重点介绍BB84和B92两种协议的编码原理和密钥分配过程,扼要介绍量子传态。分析了量子密码的实验发展现状,应用前景。

This paper introduces the principle and experiment of using optical system to realize me quantum cipher communication. It first illustrates the wave-particle dualism of photon and quantum entangle effect with the double-slit quantum interference experiment. Then it briefly discusses the entangle photon parity and Bell inequality. Furthermore, it focuses on introducing the process of BB84 and B92 protocols, quantum key distribution and quantum teleportation, Finally, this article analyzes the current situation of the experimental development and its prospect in exploitation.