Quantum state discrimination

Barnett, Stephen M. and Croke, Sarah (2009) Quantum state discrimination. Advances in Optics and Photonics, 1 (2). pp. 238-278. (https://doi.org/10.1364/AOP.1.000238)

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.

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• Item metadata

  Item type:	Article
  ID code:	29011
  Dates:	Date Event 1 April 2009 Published
  Subjects:	Science > Physics > Optics. Light
  Department:	Faculty of Science > Physics
  Depositing user:	Pure Administrator
  Date deposited:	07 Mar 2011 23:22
  Last modified:	11 Apr 2024 03:54
  Related URLs:	http://aop.osa.org/abstract.cfm?URI=aop-...
  URI:	https://strathprints.strath.ac.uk/id/eprint/29011