Quantum and Classical Correlations in the Production of Photon-Pairs with Nonlinear Crystals

Abstract

Abstract. The spatial distribution of photon-pairs produced by nonlinear crystals in the spontaneous parametric down conversion of type-II is analyzed. The correlations induced by the phase matching conditions are calculated by assuming that the ideal spatial distributions are of Gaussian proifile. Some predictions for the zones in the detection plane in which the entanglement of polarization is maximal are presented.

Coherent and Squeezed States: Introductory Review of Basic Notions, Properties, and Generalizations

“…That is, although we nowadays have at hand precise forms to produce single photons on demand (see, e.g. [261][262][263] and the review paper [264]), relevant information is accessible from the optical analogies of quantum behavior [258,260]. A first example is offered by the propagation of signals in optical waveguides [265], which can be used to test important predictions dealing with quantum resonances and leaky electromagnetic modes [266,267], solitons [268,269] and supersymmetry [270,271].…”