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Photon-pair generation in nonlinear metal-dielectric one-dimensional photonic structures

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    0438601 - FZÚ 2015 RIV US eng J - Journal Article
    Javůrek, D. - Svozilík, J. - Peřina, Jan
    Photon-pair generation in nonlinear metal-dielectric one-dimensional photonic structures.
    Physical Review. A. Roč. 90, č. 5 (2014), "053813-1"-"053813-14". ISSN 1050-2947
    R&D Projects: GA ČR GAP205/12/0382
    Institutional support: RVO:68378271
    Keywords : photon pairs * nonlinear metal-dielectric * one-dimensional photonic structures
    Subject RIV: BH - Optics, Masers, Lasers
    Impact factor: 2.808, year: 2014

    Nonlinear metal-dielectric layered structures are shown to be able to efficiently generate entangled photon pairs using spontaneous parametric down-conversion. Increase of electric-field amplitudes in these structures enhanced by the presence of metal layers is sufficient to compensate for losses inside thin metal layers. As an example, photon pairs emitted from a structure composed of alternating nonlinear dielectric GaN layers and metal Ag layers are analyzed in spectral, temporal, as well as spatial domains. Also, correlations and entanglement between two photons in a pair are determined. Very narrow photon-pair spectra together with strong directionality of photon-pair emission are observed making the photons suitable for photon-atom interactions. Highly enhanced electric-field amplitudes provide high photon-pair generation efficiencies.
    Permanent Link: http://hdl.handle.net/11104/0242019

     
     
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