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. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.66.022308)

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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.

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• Item metadata

  Item type:	Article
  ID code:	5853
  Dates:	Date Event 15 August 2002 Published
  Subjects:	Science > Physics > Optics. Light
  Department:	Faculty of Science > Physics
  Depositing user:	Miss Darcy Spiller
  Date deposited:	30 Apr 2008
  Last modified:	11 Nov 2024 08:39
  Related URLs:	Related item
  URI:	https://strathprints.strath.ac.uk/id/eprint/5853