BB84量子密钥分配协议的改进

Modification of BB84 Quantum Cryptographic Protocol

以BB 84协议为基础,对其中部分内容进行了变形,这种改变的核心思想在不影响量子密钥分配协议的安全性的基础上,通信双方通过在第三方普通公共信道上的对话,提高量子通信的传输效率.发信方在对话过程中故意发出一部分假的信息,诱使窃听者上当,以探测窃听者的存在;同时又通过协商一部分量子接收的规则来提高双方的传输效率.这种改进方案对其他带有噪声的量子密码协议同样适用.

Some improvement based on the BB84 protocol is introduced in the paper. The key idea of the improvement is to increase the transmitting efficiency through the third common public channel without affecting the safety of quantum cryptographic key distribution protocol. The sender designedly sends some false information to deceive the secret listener. In that way, it ensures the safety of the communication. Meanwhile the transmitting efficiency is increased by consulting on the receiving rules of some quantum detectors.