Equivalence of a lossless beam splitter and a nondegenerate parametric amplifier in conditional measurements

S M Barnett, D T Pegg, J Jeffers

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8 Citations (Scopus)


Ban [Opt, Commun. 143 (1997) 225] demonstrated an equivalence between a lossless beam splitter with one of the output modes in the vacuum state and a nondegenerate parametric amplifier with a vacuum input. We show that this equivalence can be extended to apply to all states. (C) 1999 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)55-57
Number of pages3
JournalOptics Communications
Issue number1-6
Publication statusPublished - 15 Dec 1999


  • conditional quantum state
  • beam splitter
  • parametric amplifier

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