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Optimal parameter estimation of a depolarizing channel

Ban, Masashi and Barnett, Stephen M. and Sasaki, Masahide (2002) Optimal parameter estimation of a depolarizing channel. Physical Review A, 66 (2). 022308-1. ISSN 1050-2947

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Abstract

We investigate strategies for estimating a depolarizing channel for a finite dimensional system. Our analysis addresses the double optimization problem of selecting the best input probe state and the measurement strategy that minimizes the Bayes cost of a quadratic function. In the qubit case, we derive the Bayes optimal strategy for any finite number of input probe particles when bipartite entanglement can be formed in the probe particles.

Item type: Article
ID code: 5853
Keywords: parameter estimation, optics, Bayes, particles, depolarizing, physics, Optics. Light, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Depositing user: Miss Darcy Spiller
Date Deposited: 30 Apr 2008
Last modified: 15 Apr 2015 10:39
Related URLs:
URI: http://strathprints.strath.ac.uk/id/eprint/5853

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