2010/06/30 by Bruno Cocciaro, Sandro Faetti, Leone Fronzoni · 2 citations
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1016/j.physleta.2010.10.064
published as Physics Letters A 375 (2011), pp. 379-384 · 9 pages, 9 figures; 1 figure deleted (previous fig 8). Changements in section 4 after referee comments
arxiv created 2010/12/22 · arxiv updated 2011/01/11
An EPR experiment with polarized entangled photons is performed to test the Eberhard model. According to the Eberhard model, quantum correlations between space-like separated events are due to a superluminal communication signal propagating in a preferred frame. The coincidences between entangled photons passing through two polarizers aligned along a East-West axis are measured as a function of time during 21 sidereal days. No deviation from the predictions of the Quantum Theory is observed. Tacking into account for the experimental uncertainties, we infer that, if a preferred frame for superluminal signals exists which moves at velocity v with respect to the Earth, the modulus of the velocity of quantum communications in this frame has to be greater than vt~0.6*104 c for v<0.1 c and for any arbitrary direction of v.