One-mode quantum Gaussian channels: Structure and quantum capacity

  • Authors:
  • A. S. Holevo

  • Affiliations:
  • Steklov Mathematical Institute, RAS, Moscow, Russia

  • Venue:
  • Problems of Information Transmission
  • Year:
  • 2007

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Abstract

A complete classification of one-mode Gaussian channels is given up to canonical unitary equivalence. We also comment on the quantum capacity of these channels. A channel complementary to the quantum channel with additive classical Gaussian noise is described, providing an example of a one-mode Gaussian channel which is neither degradable nor antidegradable.