Implementation of Quantum Private Queries Using Nuclear Magnetic Resonance
WANG Chuan1,2,3**, HAO Liang2, ZHAO Lian-Jie2
1School of Science, Beijing University of Posts and Telecommunications, Beijing 100876 2Key Laboratory for Atomic and Molecular Nanosciences and Department of Physics, Tsinghua University, Beijing 100084 3Key Laboratory of Optical Communication and Lightwave Technologies, Beijing University of Posts and Telecommunications, Beijing 100876
Implementation of Quantum Private Queries Using Nuclear Magnetic Resonance
WANG Chuan1,2,3**, HAO Liang2, ZHAO Lian-Jie2
1School of Science, Beijing University of Posts and Telecommunications, Beijing 100876 2Key Laboratory for Atomic and Molecular Nanosciences and Department of Physics, Tsinghua University, Beijing 100084 3Key Laboratory of Optical Communication and Lightwave Technologies, Beijing University of Posts and Telecommunications, Beijing 100876
摘要We present a modified protocol for the realization of a quantum private query process on a classical database. Using one-qubit query and CNOT operation, the query process can be realized in a two-mode database. In the query process, the data privacy is preserved as the sender would not reveal any information about the database besides her query information, and the database provider cannot retain any information about the query. We implement the quantum private query protocol in a nuclear magnetic resonance system. The density matrix of the memory registers are constructed.
Abstract：We present a modified protocol for the realization of a quantum private query process on a classical database. Using one-qubit query and CNOT operation, the query process can be realized in a two-mode database. In the query process, the data privacy is preserved as the sender would not reveal any information about the database besides her query information, and the database provider cannot retain any information about the query. We implement the quantum private query protocol in a nuclear magnetic resonance system. The density matrix of the memory registers are constructed.
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2011, Vol. 28 
