BB84协议与量子密钥分发的应用

BB84 Protocol and Application of Quantum Key Distribution

为保证Alice与Bob交换安全的密钥,针对RSA公钥密码算法存在的隐患,在引入单光子不可分割与量子态不可克隆的基础上,运用量子态具有波动、叠加、观测而瞬坍的本征属性,以单光子为信息载体,通过对BB84协议与贝尔不等式的讨论,实现量子隐形传态的密钥分发,从而保证经典信道上密文通信的无条件安全;同时凝炼量子密钥分发应用与量子纠缠的特征,总结广泛认可的量子通信发展路线.

Quantum key distribution takes the single photon state as the information carrier to enable Alice and Bob to achieve a secure conjugation coding through the quantum channel.Aiming at the potential prob⁃lems in quantum key distribution based on the introduction of single photon indivisibility and quantum state non cloning which has the intrinsic properties of fluctuation,superposition and collapse due to observation.The BB84 protocol and Bell inequality are discussed in detail to make quantum teleportation with their entan⁃glements to ensure the absolute security of cipher text communication on the classical channel and condense both applications of quantum key distribution and the characteristics of quantum entanglement.The widely recognized development route of quantum communication is summarized.