Realization of the Einstein-Podolsky-Rosen Paradox Using Momentum- and Position-Entangled Photons from Spontaneous Parametric Down Conversion
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 0.01ℏ2, which dramatically violates the bounds for the EPR and separability criteria.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 2004
- DOI:
- 10.1103/PhysRevLett.92.210403
- Bibcode:
- 2004PhRvL..92u0403H
- Keywords:
-
- 03.65.Ud;
- 03.65.Ta;
- 42.50.Xa;
- 42.65.Lm;
- Entanglement and quantum nonlocality;
- Foundations of quantum mechanics;
- measurement theory;
- Optical tests of quantum theory;
- Parametric down conversion and production of entangled photons