Information communicated by entangled photon pairs

  title={Information communicated by entangled photon pairs},
  author={Thomas Brougham and Stephen M. Barnett},
  journal={Physical Review A},
A key goal of quantum communication is to determine the maximum number of bits shared between two quantum systems. An important example of this is in entanglement-based quantum key distribution (QKD) schemes. A realistic treatment of this general communication problem must take account of the nonideal nature of the entanglement source and the detectors. The aim of this paper is to give such a treatment. We obtain analytic expression for the mutual information in terms of experimental parameters… 

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