A quantum protocol for millionaire problem with Bell states

Authors:
Wei-Wei Zhang;Dan Li;Ke-Jia Zhang;Hui-Juan Zuo
Affiliations:
State key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China 100876 and State Key Laboratory of Information Security, Institute o ...;State key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China 100876;State key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China 100876;State key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China 100876
Venue:
Quantum Information Processing
Year:
2013

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Abstract

We propose a quantum protocol for the millionaire problem with Bell states, where two distrustful parties can compare the values of their fortune with the help of a semi-dishonest third party. The efficiency of our protocol is higher than that of previous protocols for millionaire problem. In our protocol, any information about the values of their fortune will not be leaked out. The security of our protocol is also discussed.