Quantum Private Query Protocol Based on Two Non-Orthogonal States

Quantum Private Query Protocol Based on Two Non-Orthogonal States

We propose a loss tolerant quantum private query (QPQ) protocol based on two non-orthogonal states and unambiguous state discrimination (USD) measurement. By analyzing a two-point attack by a third party, we find that our protocol has a stronger ability to resist external attacks than G-protocol and...

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Veröffentlicht in:Entropy (Basel, Switzerland) Switzerland), 2016-05, Vol.18 (5), p.163-163
Hauptverfasser: Chang, Yan, Zhang, Shibin, Han, Guihua, Sheng, Zhiwei, Yan, Lili, Xiong, Jinxin
Format: Artikel
Sprache:eng
Schlagworte:
Compressing
conclusive bits
Discrimination
Entropy
Post-processing
quantum private query
Query processing
Resists
Security
two-point attack
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Beschreibung
Zusammenfassung:We propose a loss tolerant quantum private query (QPQ) protocol based on two non-orthogonal states and unambiguous state discrimination (USD) measurement. By analyzing a two-point attack by a third party, we find that our protocol has a stronger ability to resist external attacks than G-protocol and Y-protocol. Our protocol requires a smaller number of compressions than that in G-protocol (Gao et al., Opt. Exp. 2012, 20, 17411-17420) and Y-protocol (Yan et al. Quant. Inf. Process. 2014, 13, 805-813), which means less post-processing. Our protocol shows better database security and user privacy compared with G-protocol.
ISSN:1099-4300
1099-4300
DOI:10.3390/e18050163