Quantum Private Query Based on Bell State and Single Photons
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Quantum private query (QPQ) can protect both user’s and database holder’s privacy. In this paper, we propose a novel quantum private query protocol based on Bell state and single photons. As far as we know, no one has ever proposed the QPQ based on Bell state. By using the decoherence-free (DF) states, our protocol can resist the collective noise. Besides that, our protocol is a one-way quantum protocol, which can resist the Trojan horse attack and reduce the communication complexity. Our protocol can not only guarantee the participants’ privacy but also stand against an external eavesdropper.
KeywordsQuantum private query Bell state Single photons
The authors would like to thank the anonymous reviewers and editors who have helped to improve the paper.
Project supported by: NSFC (Grant Nos. 61572086, U1636106 61402058), Sichuan innovation team of quantum security communication (No.17TD0009), Application Foundation Project of Sichuan Province of China (2017JY0168), the Fund for Middle and Young Academic Leaders of CUIT (Grant No. J201511), Sichuan academic and technical leaders training funding support projects (Grant No.2016120080102643) and National Undergraduate Training Program for Innovation and Entrepreneurship under Grant Nos. 201710621027.
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