期刊
QUANTUM INFORMATION PROCESSING
卷 15, 期 9, 页码 3833-3840出版社
SPRINGER
DOI: 10.1007/s11128-016-1367-z
关键词
Quantum private query; Quantum key distribution; Communication complexity; Security
资金
- National Natural Science Foundation of China [61572053, 61472048]
- Beijing Natural Science Foundation [4162005, 4152038]
- Scientific Research Common Program of Beijing Municipal Commission of Education [KM201510005016]
- Jing-Hua Talents Project of Beijing University of Technology [2014-JH-L06]
Existing classical post-processing (CPP) schemes for quantum key distribution (QKD)-based quantum private queries (QPQs) including the kN -> N, N -> N, and rM -> N ones have been found imperfect in terms of communication efficiency and security. In this paper, we propose a novel CPP scheme for QKD-based QPQs. The proposed CPP scheme reduces the communication complexity and improves the security of QKD-based QPQ protocols largely. Furthermore, the proposed CPP scheme can provide a multi-bit query efficiently.
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