Abstract
We propose a new quantum private query protocol with the technique of decoherence-free states, which is a theoretical study of how decoherence-free states can be used for the protection of quantum information in such a protocol. This protocol can solve the noise problem that will make the user obtain a wrong answer and hence give rise to a bad influence on the reputation of the database provider. Furthermore, this protocol is also flexible, loss-resistant and easily generalized to a large database similar to the previous works.
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Acknowledgments
This work was supported by the National High Technology Research and Development Program (863 Program)(Grant No. 2015AA011704), the Key Program of NSFC Union Foundation (Grant Nos. U1135002, U1405255), the National Natural Science Foundation of China (Grant Nos. 61202317, 61572246), the Plan for Scientific Innovation Talents of Henan Province, the Program for Science & Technology Innovation Talents in Universities of Henan Province (Grant No. 13HASTIT042), and the Key Scientific Research Project in Universities of Henan Province (Grant No. 16A520021).
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Wang, TY., Wang, SY. & Ma, JF. Robust Quantum Private Queries. Int J Theor Phys 55, 3309–3317 (2016). https://doi.org/10.1007/s10773-016-2960-8
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DOI: https://doi.org/10.1007/s10773-016-2960-8