Measurements of entanglement over a kilometric distance to test superluminal models of Quantum Mechanics: preliminary results.

[摘要] As shown in the EPR paper (Einstein, Podolsky e Rosen, 1935), Quantum Mechanics is a non-local Theory. The Bell theorem and the successive experiments ruled out the possibility of explaining quantum correlations using only local hidden variables models. Some authors suggested that quantum correlations could be due to superluminal communications that propagate isotropically with velocity vt> c in a preferred reference frame. For finite values of vtand in some special cases, Quantum Mechanics and superluminal models lead to different predictions. So far, no deviations from the predictions of Quantum Mechanics have been detected and only lower bounds for the superluminal velocities vthave been established. Here we describe a new experiment that increases the maximum detectable superluminal velocities and we give some preliminary results.

[发布机构] Department of Physics Enrico Fermi, Largo Pontecorvo 3, Pisa; I-56127, Italy^1

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Hidden variable;Lower bounds;Measurements of;Nonlocal theory;Quantum correlations;Reference frame;Super-luminal velocity;Superluminal communication