Photon-pair generation in nonlinear metal-dielectric 1D photonic structures
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.
Keywords
Cite
@article{arxiv.1410.4389,
title = {Photon-pair generation in nonlinear metal-dielectric 1D photonic structures},
author = {Dalibor Javůrek and Jan Peřina and Jiří Svozilík},
journal= {arXiv preprint arXiv:1410.4389},
year = {2015}
}