Operator-sum representation for bosonic Gaussian channels

  title={Operator-sum representation for bosonic Gaussian channels},
  author={J. Solomon Ivan and Krishna Kumar Sabapathy and R. Simon},
  journal={Physical Review A},
Operator-sum or Kraus representations for single-mode bosonic Gaussian channels are developed, and several of their consequences explored. The fact that the two-mode metaplectic operators acting as unitary purification of these channels do not, in their canonical form, mix the position and momentum variables is exploited to present a procedure which applies uniformly to all families in the Holevo classification. In this procedure the Kraus operators of every quantum-limited Gaussian channel can… 

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