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CONTROLLED QUANTUM SECURE DIRECT COMMUNICATION WITH QUANTUM ENCRYPTION

State key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

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TIAN-YIN WANG

State key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

School of Mathematical Science, Luoyang Normal University, Luoyang 471022, China

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JIAN-ZHONG DU

School of Information Engineering, Science and Technology University of Beijing, Beijing 100083, China

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QIAO-YAN WEN

State key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

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, and

FU-CHEN ZHU

National Laboratory for Modern Communications, P.O. Box 810, Chengdu 610041, China

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https://doi.org/10.1142/S0219749908003566Cited by:70 (Source: Crossref)

Abstract

Utilizing a partially entangled GHZ state, we propose a novel controlled quantum secure direct communication (QSDC) with quantum encryption. Under the supervision and help of the third side, the sender and the receiver can securely share the private quantum entanglement keys used to encrypt and decrypt the secret message. According to the results of checking the eavesdropping on decoy photons, communicators can decide whether the quantum keys are reused in the next round. Not only will eavesdropping inevitably disturb the states of the decoy photons and be detected, but arbitrary transmission errors can also be corrected.

Keywords:

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