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arXiv · 1410.4389

Photon-pair generation in nonlinear metal-dielectric 1D photonic structures

Dalibor Javůrek·Jan Peřina Jr.·Jiří Svozilík
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Abstract

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.

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Dalibor Javůrek, Jan Peřina Jr., Jiří Svozilík. 2014-10-16. Photon-pair generation in nonlinear metal-dielectric 1D photonic structures. https://doi.org/10.1103/physreva.90.053813

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