Experimental test of nonlocal quantum correlation in relativistic configurations - art. no. 022111

We report on an experimental investigation of the tension between quantum n onlocality and relativity. Entangled photons are sent via an optical fiber network to two villages near Geneva, separated by more than 10 km where the y are analyzed by interferometers. The photon pair source is set as precise ly as possible in the center so that the two photons arrive at the detector s within a time interval of less than 5 ps (corresponding to a path length difference of less than 1 mm). One detector is set in motion so that both d etectors, each in its own inertial reference frame, are first to do the mea surement! The data always reproduces the quantum correlations, making it th us more difficult to consider the projection postulate as a compact descrip tion of real collapses of the wave function.