Efficient bidirectional quantum secure communication with two-photon entanglement

  • Authors:

  • Xun-Ru Yin;Wen-Ping Ma;Wei-Yan Liu;Dong-Su Shen

  • Affiliations:

  • State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China 710071;State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China 710071;School of Science, Northwestern Polytechnical University, Xi'an, China 710072;State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an, China 710071

  • Venue:
  • Quantum Information Processing
  • Year:
  • 2013

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Abstract

An efficient bidirectional quantum secure communication protocol is proposed with two-photon entanglement. Compared with the previous protocol proposed by Shi et al., our protocol can achieve higher efficiency. Meanwhile, for the same length secret messages, only half of entangled photon pairs need to be prepared in our protocol. And the number of classical bits in public classical communication is also a half of that in the previous protocol. Moreover, the information leakage does not exist in our scheme.