Quantum state discrimination

Stephen M. Barnett; Sarah Croke

doi:10.1364/AOP.1.000238

Quantum state discrimination

Stephen M. Barnett, Sarah Croke

Physics

Research output: Contribution to journal › Article › peer-review

372 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.

Original language	English
Pages (from-to)	238-278
Number of pages	41
Journal	Advances in Optics and Photonics
Volume	1
Issue number	2
DOIs	https://doi.org/10.1364/AOP.1.000238
Publication status	Published - 1 Apr 2009

Keywords

quantum communications
quantum information
quantum processing

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10.1364/AOP.1.000238

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KW - quantum processing

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Quantum state discrimination

Abstract

Keywords

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