Realization of the purely spatial Einstein-Podolsky-Rosen paradox in full-field images of spontaneous parametric down-conversion
2012; American Physical Society; Volume: 86; Issue: 1 Linguagem: Inglês
10.1103/physreva.86.010101
ISSN1538-4446
AutoresPaul‐Antoine Moreau, Joé Mougin-Sisini, F. Devaux, Éric Lantz,
Tópico(s)Spectroscopy and Quantum Chemical Studies
ResumoWe 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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