Testing a hypothetical transient deviation from quantum mechanics: preliminary results

Abstract

The conflict between quantum mechanics (QM) and the intuitive concepts of locality and realism is most noticeable in the correlation between measurements performed in remote regions of a spatially spread entangled state of photons. It has been hypothesized that a transient deviation (from the value predicted by QM) may occur if the correlation is measured in a time shorter than L / c , where L is the spatial spread of the entangled state, and c is the speed of light. This hypothesis solves the conflict by minimally modifying the interpretation of QM, and opens the door to interesting possibilities. Technical reasons make the hypothesis impossible to test directly nowadays, but a stroboscopic observation is attainable. We present preliminary, nonconclusive results of an experiment in progress aimed to perform that test.