Abstract: A complete degradability analysis of one-mode bosonic Gaussian channels is presented. We show that apart from the class of channels which are unitarily equivalent to the channels with additive classical noise, these maps can be characterized in terms of weak- and/or anti-degradability. Furthermore a new set of channels which have null quantum capacity is identified. This is done by exploiting the composition rules of one-mode Gaussian maps and the fact that anti-degradable channels cannot be used to transfer quantum information.
One-mode bosonic Gaussian channels: a full weak-degradability classification / F. Caruso;V. Giovannetti;A. S. Holevo. - In: NEW JOURNAL OF PHYSICS. - ISSN 1367-2630. - ELETTRONICO. - 8:(2006), pp. 310-1-310-18. [10.1088/1367-2630/8/12/310]
One-mode bosonic Gaussian channels: a full weak-degradability classification
CARUSO, FILIPPO;
2006
Abstract
Abstract: A complete degradability analysis of one-mode bosonic Gaussian channels is presented. We show that apart from the class of channels which are unitarily equivalent to the channels with additive classical noise, these maps can be characterized in terms of weak- and/or anti-degradability. Furthermore a new set of channels which have null quantum capacity is identified. This is done by exploiting the composition rules of one-mode Gaussian maps and the fact that anti-degradable channels cannot be used to transfer quantum information.File | Dimensione | Formato | |
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