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Efficient quantum dialogue using entangled states and entanglement swapping without information leakage

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Abstract

We propose a novel quantum dialogue protocol by using the generalized Bell states and entanglement swapping. In the protocol, a sequence of ordered two-qutrit entangled states acts as quantum information channel for exchanging secret messages directly and simultaneously. Besides, a secret key string is shared between the communicants to overcome information leakage. Different from those previous information leakage-resistant quantum dialogue protocols, the particles, composed of one of each pair of entangled states, are transmitted only one time in the proposed protocol. Security analysis shows that our protocol can overcome information leakage and resist several well-known attacks. Moreover, the efficiency of our scheme is acceptable.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (Grant Nos. 61272481, 61402352) and China Postdoctoral Science Foundation (Grant No. 2014M5 62377).

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Authors and Affiliations

  1. The National Key Laboratory of Integrated Services Networks, Xidian University, Xi’an, 710071, China

    He Wang, Yu Qing Zhang, Xue Feng Liu & Yu Pu Hu

  2. National Computer Network Intrusion Protection Center, Graduate University of Chinese Academy of Sciences, Beijing, 100049, China

    Yu Qing Zhang

Authors
  1. He Wang
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  2. Yu Qing Zhang
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  3. Xue Feng Liu
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  4. Yu Pu Hu
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Correspondence to He Wang.

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Wang, H., Zhang, Y.Q., Liu, X.F. et al. Efficient quantum dialogue using entangled states and entanglement swapping without information leakage. Quantum Inf Process 15, 2593–2603 (2016). https://doi.org/10.1007/s11128-016-1294-z

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  • DOI: https://doi.org/10.1007/s11128-016-1294-z

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