一种通信双方之间的密钥分配方案

A Scheme about Quantum Key Distribution Between Two Users

利用EPR对直接传输来实现量子密钥分配方案.其中,Alice和Bob在建立密钥过程中,由Bell基测量和R(θ)操作来检测传输的安全性.除检测部分外,剩余的部分全部用来建立密钥,效率较高.通过研究证明此方案是安全的.

A quantum key distribution scheme using EPR pairs between two parties is proposed. In this scheme,Alice and Bob measure the state using Bell base and operate it using R （θ） for checking eavesdroppers during distributing the key. It is more efficient in that one uses all EPR pairs except those chosen for checking eavesdroppers. As the key, it can be proved to be secure.