Quantum Optical Communication Rates through an Amplifying Random Medium | Zendy

J. Tworzydło | Zendy; C. W. J. Beenakker | Zendy

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Quantum Optical Communication Rates through an Amplifying Random Medium

Author(s) -

J. Tworzydło,

C. W. J. Beenakker

Publication year - 2002

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.89.043902

Subject(s) - limit (mathematics) , heterodyne detection , physics , laser , statistical physics , power (physics) , quantum , quantum optics , degree (music) , quantum mechanics , heterodyne (poetry) , optoelectronics , mathematics , mathematical analysis , acoustics

We study the competing effects of stimulated and spontaneous emission on theinformation capacity of an amplifying disordered waveguide. At the laserthreshold the capacity reaches a "universal" limit, independent of the degreeof disorder. Whether or not this limit is larger or smaller than the capacitywithout amplification depends on the disorder, as well as on the input power.Explicit expressions are obtained for heterodyne detection of coherent states,and generalized for arbitrary detection scheme.Comment: 4 pages, 4 Postscript figure

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