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arXiv · 1204.0990

Realization of the purely spatial Einstein-Podolsky-Rosen paradox in full-field images of spontaneous parametric down conversion

Paul-Antoine Moreau·Joé Mougin-Sisini·Fabrice Devaux·Eric Lantz
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Abstract

We demonstrate Einstein-Podolsky-Rosen (EPR) entanglement by detecting purely spatial quantum correlations in the near and far fields of spontaneous parametric down-conversion generated in a type-2 beta barium borate crystal. Full-field imaging is performed in the photon-counting regime with an electron-multiplying CCD camera. The data are used without any postselection, and we obtain a violation of Heisenberg inequalities with inferred quantities taking into account all the biphoton pairs in both the near and far fields by integration on the entire two-dimensional transverse planes. This ensures a rigorous demonstration of the EPR paradox in its original position momentum form.

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Paul-Antoine Moreau, Joé Mougin-Sisini, Fabrice Devaux, Eric Lantz. 2012-07-19. Realization of the purely spatial Einstein-Podolsky-Rosen paradox in full-field images of spontaneous parametric down conversion. https://doi.org/10.1103/physreva.86.010101

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