Random nonlinear layered structures as sources of photon pairs for quantum-information processing

  • Jan PeřinaJr.
  • Marco Centini
  • Concita Sibilia
  • Mario Bertolotti


Random nonlinear layered structures have been found to be a useful source of photon pairs with perfectly indistinguishable un-entangled photons emitted into a very narrow spectral range. Localization of the interacting optical fields typical for random structures gives relatively high photon-pair fluxes. By superposing photon-pair emission quantum paths at different emission angles, several kinds of twophoton states (including states with coincident frequencies) useful in quantum-information processing can easily be generated.


spontaneous parametric down-conversion random media photon pair quantum-information processing 


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Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  • Jan PeřinaJr.
    • 1
  • Marco Centini
    • 2
  • Concita Sibilia
    • 2
  • Mario Bertolotti
    • 2
  1. 1.Joint Laboratory of Optics of Palacký University and Institute of Physics of Academy of Sciences of the Czech RepublicOlomoucCzech Republic
  2. 2.Dipartimento di EnergeticaUniversità La Sapienza di RomaRomaItaly

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