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. 2004 May 28;92(21):210403.
doi: 10.1103/PhysRevLett.92.210403. Epub 2004 May 28.

Realization of the Einstein-Podolsky-Rosen paradox using momentum- and position-entangled photons from spontaneous parametric down conversion

John C Howell  1 , Ryan S Bennink, Sean J Bentley, R W Boyd
Affiliations

Realization of the Einstein-Podolsky-Rosen paradox using momentum- and position-entangled photons from spontaneous parametric down conversion

John C Howell et al. Phys Rev Lett. .

Abstract

We report on a momentum-position realization of the EPR paradox using direct detection in the near and far fields of the photons emitted by collinear type-II phase-matched parametric down conversion. Using this approach we achieved a measured two-photon momentum-position variance product of 0.01 variant Planck's over 2pi (2), which dramatically violates the bounds for the EPR and separability criteria.

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