审视量子保密通信

量子保密通信基于量子测不准和量子不可克隆等量子力学原理，理论上具有可完备证明的物理安全性和在线检测窃听性能，但是它能否解决数据通信的完全保密问题？量子保密通信在短中期内是否具有应用可行性？实际上，在中短期内，量子密钥协商（QKD）和量子纠缠通信都不能提供无条件安全性，在通信性能方面（通信距离、速率和抗干扰等）也不具有任何优势。对量子保密通信进行客观评估，对与其密切相关的一些问题进行探讨和分析并形成明确的结论具有十分重要的现实意义。

Survey on Quantum Secure Communication

Based on uncertainty and no-cloning theorem,quantum secure communication is physically secure and of eavesdropping-detection capability. However whether is a practical quantum secure communication system perfectly secure or notCould it be put into practice soonIn fact,QKD and quantum entanglement communication could not provide unconditional security in the near future,and both have no superiorities in communication distance,speed and anti-jamming performance. It is very important to objectively evaluate th...