Quantum state discrimination

Stephen M. Barnett, Sarah Croke

Research output: Contribution to journalArticle

150 Citations (Scopus)

Abstract

It is a fundamental consequence of the superposition principle for quantum states that there must exist nonorthogonal states, that is, states that, although different, have a nonzero overlap. This finite overlap means that there is no way of determining with certainty in which of two such states a given physical system has been prepared. We review the various strategies that have been devised to discriminate optimally between nonorthogonal states and some of the optical experiments that have been performed to realize these.
LanguageEnglish
Pages238-278
Number of pages41
JournalAdvances in Optics and Photonics
Volume1
Issue number2
DOIs
Publication statusPublished - 1 Apr 2009

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discrimination

Keywords

  • quantum communications
  • quantum information
  • quantum processing

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Barnett, Stephen M. ; Croke, Sarah. / Quantum state discrimination. In: Advances in Optics and Photonics . 2009 ; Vol. 1, No. 2. pp. 238-278.
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Quantum state discrimination. / Barnett, Stephen M.; Croke, Sarah.

In: Advances in Optics and Photonics , Vol. 1, No. 2, 01.04.2009, p. 238-278.

Research output: Contribution to journalArticle

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