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Retrodiction for quantum optical communications

Barnett, S M and Pegg, D T and Jeffers, J and Jedrkiewicz, O and Loudon, R (2000) Retrodiction for quantum optical communications. Physical Review A, 6202 (2). -. ISSN 1050-2947

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Abstract

Given the result of a measurement on the output of a quantum optical communication channel, we show how to calculate a retrodictive state at the input. This state can be used by the receiver to determine the probability that any one of a given set of states was selected by the transmitter. We establish the remarkably simple result that retrodicting the prepared input signal for an attenuating (amplifying) channel corresponds to predicting the measured output signal for an amplifying (attenuating) channel.

Item type: Article
ID code: 31006
Keywords: time evolution, mechanical systems, usual notion, amplifier, noise, Optics. Light
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 17 Jun 2011 12:18
    Last modified: 07 Dec 2013 01:02
    URI: http://strathprints.strath.ac.uk/id/eprint/31006

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