Classical Capacity of the Lossy Bosonic Channel: The Exact Solution

  • Giovannetti V
  • Guha S
  • Lloyd S
 et al. 
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The classical capacity of the lossy bosonic channel is calculated exactly. It is shown that its Holevo information is not superadditive, and that a coherent-state encoding achieves capacity. The capacity of far-field, free-space optical communications is given as an example.

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  • V. Giovannetti

  • S. Guha

  • S. Lloyd

  • L. Maccone

  • J. H. Shapiro

  • H. P. Yuen

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