Realization of the EinsteinPodolskyRosen paradox for continuous variables
Abstract
The EinsteinPodolskyRosen paradox is demonstrated experimentally for dynamical variables having a continuous spectrum. As opposed to previous work with discrete spin or polarization variables, the continuous optical amplitudes of a signal beam are inferred in turn from those of a spatially separated but strongly correlated idler beam generated by nondegenerate parametric amplification. The uncertainty product for the variances of these inferences is observed to be 0.70+/0.01, which is below the limit of unity required for the demonstration of the paradox.
 Publication:

Physical Review Letters
 Pub Date:
 June 1992
 DOI:
 10.1103/PhysRevLett.68.3663
 Bibcode:
 1992PhRvL..68.3663O
 Keywords:

 03.65.Bz;
 42.50.Wm