Quantum entanglement in strongly non-degenerate OPOs: the doubly and singly resonant cases

Research output: Chapter in Book/Report/Conference proceedingConference contribution book


Many theoretical and experimental approaches to quantum entanglement in Optical Parametric Oscillators (OPO) concern the degenerate or the slightly non-degenerate cases where a single local oscillator can be used to measure quadrature correlations for the characterization of fluctuations below the Standard Quantum Limit (SQL) in the frequency domain. In the strongly non-degenerate case, alternative characterizations of quantum entanglement are needed. We provide evidence that correlation functions corresponding to coincidence measurements of the intensity difference between signal and idler fields should be able to assess quantum entanglement and at the same time be experimentally viable in the case of strongly non-degenerate OPO.
Original languageEnglish
Title of host publication2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)
Place of PublicationPiscataway, N.J.
ISBN (Print)9781457705328
Publication statusPublished - 11 Jul 2011
EventEuropean Quantum Electronics Conference, EQEC 2011 - Munich, Germany
Duration: 22 May 201126 May 2011


ConferenceEuropean Quantum Electronics Conference, EQEC 2011


  • quantum entaglement
  • electro optics
  • quantum electronics


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