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Quantum Information Processing

Multi-user quantum private query

  • 01-08-2020
Published in:
Authors
Hao Yang
Min Xiao
Published in
Quantum Information Processing | Issue 8/2020

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Abstract

Quantum private query (QPQ) is a kind of secure information retrieve protocol, in which both user and database privacy can be protected. Previous QPQ protocols generally consider one user retrieving and need to be performed repeatedly between each user and the database provider when multiple users want to retrieve information from a database. This work focuses on a particular scenario, where multiple users work together to accomplish a task and need to securely query the same item from a database, and proposes a multi-user QPQ protocol using entanglement swapping technology of multi-particle GHZ state. The security analysis shows that the user and database privacy are both guaranteed by real-time security detection.

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previous article Quantum discord based on linear entropy and thermal negativity of qutrit–qubit mixed spin chain under the influence of external magnetic field
next article Quantitative wave–particle duality relations from the density matrix properties
Title
Multi-user quantum private query
Authors
Hao Yang
Min Xiao
Publication date
01-08-2020
Publisher
Springer US
Published in
Quantum Information Processing / Issue 8/2020
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-020-02732-3
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