Random qubit-states and how best to measure them

Barnett, S.M. (2010) Random qubit-states and how best to measure them. Journal of Modern Optics, 57 (3). pp. 232-238. ISSN 1362-3044 (https://doi.org/10.1080/09500340903082655)

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Abstract

We consider the problem of measuring a single qubit, known to have been prepared in either a randomly selected pure state or a randomly selected real pure state. We seek the measurements that provide either the best estimate of the state prepared or maximise the accessible information. Surprisingly, any sensible measurement turns out to be optimal. We discuss the application of these ideas to multiple qubits and higher-dimensional systems.

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• Item metadata

  Item type:	Article
  ID code:	26870
  Dates:	Date Event January 2010 Published
  Subjects:	Science > Physics
  Department:	Faculty of Science > Physics
  Depositing user:	Users 1261 not found.
  Date deposited:	19 Aug 2010 14:44
  Last modified:	12 Dec 2024 02:31
  Related URLs:	Scopus publication
  URI:	https://strathprints.strath.ac.uk/id/eprint/26870