关键词: 声, 量子保密查询, 量子纠错码, 纠缠, 密钥分发

Abstract: In quantum secure communication network, it is very important to protect the privacy of query users and database. Considering the influence of noise in the actual communication process, this paper proposes a practical quantum private query scheme in the case of noise. Firstly, the initialization phase is used to verify the identity through quantum entanglement pair, which ensures the security of communication; secondly, in the process of key distribution, the two communication parties infer the key information by combining Bell basis measurement, and a user only obtains part of the key information. Finally, the receiver uses CSS quantum error correction code to perform corresponding error correction, which can protect user privacy and prevent eavesdropping. Therefore, according to theoretical analysis of the security and communication efficiency of the scheme, it is verified that the scheme is a protocol with antinoise capability, which not only improves the efficiency of protocol communication, but also has the significance of practical application.

Key words: noise, quantum private query, quantum error coding, entanglement, key distribution