Random qubit-states and how best to measure them

S.M. Barnett

Research output: Contribution to journalArticle

1 Citation (Scopus)

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.
LanguageEnglish
Pages232-238
Number of pages7
JournalJournal of Modern Optics
Volume57
Issue number3
DOIs
Publication statusPublished - Jan 2010

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Keywords

  • quantum measurement
  • quantum information

Cite this

Barnett, S.M. / Random qubit-states and how best to measure them. In: Journal of Modern Optics. 2010 ; Vol. 57, No. 3. pp. 232-238.
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Random qubit-states and how best to measure them. / Barnett, S.M.

In: Journal of Modern Optics, Vol. 57, No. 3, 01.2010, p. 232-238.

Research output: Contribution to journalArticle

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