基于两量子态比较思想,提出了一个新颖的量子密钥分发协议.该协议具有理论上的无条件安全性.同时,通过对提出的协议在实际情况下的安全性进行研究,表明新协议可抵抗光子数分裂攻击,且在相同的密钥比特率条件下其安全传输距离比Bennett 1992协议更远.
Drawing idea from state compare,a novel quantum key distribution protocol is proposed.Meanwhile,we analyze the security of the presented protocol in practice.Comparing with the Bennett 92 protocol,the presented protocol is robust against photon number splitting attack,and has a longer distance limit.