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Proceedings Paper

Information accessible by measurement in mirror-symmetric ensembles of qubit states
Author(s): Michael R. Frey
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Paper Abstract

We formulate an expression for the accessible information in mirror-symmetric ensembles of real qubit states. This expression is used to make a detailed study of optimum quantum measurements for extracting the accessible information in three-state, mirror-symmetric ensembles. Distinct measurement regimes are identified for these ensembles with optimal measurement strategies involving different numbers of measurement operators, similar to results found for minimum error discrimination. Our results generalize known results for the accessible information in two pure states and in the trine ensemble.

Paper Details

Date Published: 12 May 2006
PDF: 12 pages
Proc. SPIE 6244, Quantum Information and Computation IV, 624411 (12 May 2006); doi: 10.1117/12.665498
Show Author Affiliations
Michael R. Frey, Bucknell Univ. (United States)

Published in SPIE Proceedings Vol. 6244:
Quantum Information and Computation IV
Eric J. Donkor; Andrew R. Pirich; Howard E. Brandt, Editor(s)

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