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

0438601 - FZÚ 2015 RIV US eng J - Článek v odborném periodiku
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
Grant CEP: GA ČR GAP205/12/0382
Institucionální podpora: RVO:68378271
Klíčová slova: photon pairs * nonlinear metal-dielectric * one-dimensional photonic structures
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 2.808, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0242019