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Secure communication with choice of measurement

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Abstract

It has been previously found that a signal can be encoded in the choice of the measurement basis of one of the communicating parties, while the outcomes of the measurement are irrelevant for the communication and therefore may be discarded. The proposed protocol was novel and interesting, but it was not secure for communication. An eavesdropper can obtain the information without being detected. We utilize the outcomes of measurement and separate the Hilbert space to propose a secure communication protocol. An error correction code is used to increase the fault tolerance of the signal transmission against noise.

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Authors and Affiliations

  1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui, 230026, P.R. China

    Dong Xie & An Min Wang

Authors
  1. Dong Xie
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  2. An Min Wang
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Correspondence to Dong Xie.

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Xie, D., Wang, A.M. Secure communication with choice of measurement. Eur. Phys. J. D 68, 281 (2014). https://doi.org/10.1140/epjd/e2014-50122-7

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  • DOI: https://doi.org/10.1140/epjd/e2014-50122-7

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