Experimental demonstration of optimal unambiguous state discrimination

Roger B.M. Clarke, Anthony Chefles, Stephen M. Barnett, Erling Riis

Research output: Contribution to journalArticle

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Abstract

We present a full demonstration of unambiguous state discrimination between nonorthogonal quantum states. Using a free-space interferometer we have realized the optimum quantum measurement scheme for two nonorthogonal states of light, known as the Ivanovic-Dieks-Peres (IDP) measurement. We have gained access to all three possible outcomes of this measurement. All aspects of this generalized measurement scheme, including its superiority over a standard von Neumann measurement, have been demonstrated within 1.5% of the IDP predictions.
Original languageEnglish
Pages (from-to)040305-1-040305-4
JournalPhysical Review A
Volume63
Issue number4
DOIs
Publication statusPublished - 21 Mar 2001

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discrimination
interferometers
predictions

Keywords

  • optics
  • quantum physics
  • optimal unambiguous state discrimination
  • Ivanovic-Dieks-Peres measurement

Cite this

Clarke, Roger B.M. ; Chefles, Anthony ; Barnett, Stephen M. ; Riis, Erling. / Experimental demonstration of optimal unambiguous state discrimination. In: Physical Review A. 2001 ; Vol. 63, No. 4. pp. 040305-1-040305-4.
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Experimental demonstration of optimal unambiguous state discrimination. / Clarke, Roger B.M.; Chefles, Anthony; Barnett, Stephen M.; Riis, Erling.

In: Physical Review A, Vol. 63, No. 4, 21.03.2001, p. 040305-1-040305-4.

Research output: Contribution to journalArticle

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