Random nonlinear layered structures as sources of photon pairs for quantum-information processing |
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| Authors: | Jr" target="_blank">Jan?Pe?inaJr Marco?Centini Concita?Sibilia Mario?Bertolotti |
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| Institution: | 1.Joint Laboratory of Optics of Palacky University and Institute of Physics of Academy of Sciences of the Czech Republic,Olomouc,Czech Republic;2.Dipartimento di Energetica,Università La Sapienza di Roma,Roma,Italy |
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| Abstract: | 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. |
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