Diffraction of Einstein–Podolski–Rosen states with one- and two-copies
José Ferraz, M. A. D. Carvalho, L. P. Berruezo, Pierre-Louis de Assis, Fabio Sciarrino, Sebastião Pádua · Journal of Physics B Atomic Molecular and Optical Physics · 2014
We investigate the single slit diffraction pattern of one- and two-pairs of photons obtained from spontaneous parametric down conversion. Our experimental setup generates two classes of states, Einstein?Podolski?Rosen states and near-separable states. For the first class of states the diffraction pattern is anomalous, and is explained by the quantum correlations observed in the transversal position?momentum degree of freedom of down converted photons. The diffraction pattern, associated with the second class of states is similar to the pattern obtained from a classical light source.