MULTIPARTY CONTROLLED DETERMINISTIC SECURE QUANTUM COMMUNICATION THROUGH ENTANGLEMENT SWAPPING

Li Dong, Xiao-Ming Xiu (), Ya-Jun Gao and Feng Chi
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Li Dong: Department of Physics, Bohai University, Jinzhou 121013, China
Xiao-Ming Xiu: Department of Physics, Bohai University, Jinzhou 121013, China
Ya-Jun Gao: Department of Physics, Bohai University, Jinzhou 121013, China
Feng Chi: Department of Physics, Bohai University, Jinzhou 121013, China

International Journal of Modern Physics C (IJMPC), 2008, vol. 19, issue 11, 1673-1681

Abstract: A three-party controlled deterministic secure quantum communication scheme through entanglement swapping is proposed firstly. In the scheme, the sender needs to prepare a class of Greenberger–Horne–Zeilinger (GHZ) states which are used as quantum channel. The two communicators may securely communicate under the control of the controller if the quantum channel is safe. The roles of the sender, the receiver, and the controller can be exchanged owing to the symmetry of the quantum channel. Different from other controlled quantum secure communication schemes, the scheme needs lesser additional classical information for transferring secret information. Finally, it is generalized to a multiparty controlled deterministic secure quantum communication scheme.

Keywords: Quantum communication; quantum cryptography; deterministic secure quantum communication; GHZ state; 03.67.Hk; 03.67.Dd; 03.65.Ud (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1142/S0129183108013205

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