Quantum images

L.A. Lugiato, S.M. Barnett, A. Gatti, I. Marzoli, G.L. Oppo, H. Wiedemann

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We illustrate the spatial quantum features that emerge in a degenerate optical parametric oscillator below threshold, where the signal field is purely generated by quantum fluctuations. We analyze the behaviour of the spatial correlation function of a generic quadrature component of the signal field in both cases of a cavity with plane mirrors and a cavity with spherical mirrors. The correlation length diverges when the semiclassical threshold for signal field generation is approached. We focus on the novel concept of quantum image, which is analyzed both in the near field and in the far field.
Original languageEnglish
Pages (from-to)809-822
Number of pages14
JournalJ. Nonlinear Opt. Phys. Mater.
Issue number4
Publication statusPublished - 1996


  • optical parametric oscillators
  • correlation lengths
  • degenerate optical parametric oscillators
  • quadrature components
  • quantum features
  • quantum fluctuation
  • quantum images
  • spatial correlation functions
  • spherical mirror
  • mirrors


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