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Solving the Einstein-Podolsky-Rosen puzzle: the origin of non-locality in Aspect-type experiments


So far no mechanism is known, which could connect the two measurements in an Aspect-type experiment. Here, we suggest such a mechanism, based on the phase of a photon’s field during propagation. We show that two polarization measurements are correlated, even if no signal passes from one point of measurement to the other. The non-local connection of a photon pair is the result of its origin at a common source, where the two fields acquire a well defined phase difference. Therefore, it is not actually a non-local effect in any conventional sense. We expect that the model and the detailed analysis it allows will have a major impact on quantum cryptography and quantum computation.

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Correspondence to Werner A. Hofer.

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Hofer, W.A. Solving the Einstein-Podolsky-Rosen puzzle: the origin of non-locality in Aspect-type experiments. Front. Phys. 7, 504–508 (2012).

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  • entanglement
  • Bell inequalities
  • coincidence measurements
  • Einstein-Podolsky-Rosen paradox