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Realism in the Realized Popper's Experiment

Geoffrey Hunter
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Abstract

The realization of Karl Popper's EPR-like experiment by Shih and Kim (published 1999) produced the result that Popper hoped for: no ``action at a distance'' on one photon of an entangled pair when a measurement is made on the other photon. This experimental result is interpretable in local realistic terms: each photon has a definite position and transverse momentum most of the time; the position measurement on one photon (localization within a slit) disturbs the transverse momentum of that photon in a non-predictable way in accordance with the uncertainty principle; however, there is no effect on the other photon (the photon that is not in a slit) no action at a distance. The position measurement (localization within a slit) of the one photon destroys the entanglement between the photons; i.e. decoherence occurs.

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Geoffrey Hunter. 2005-07-01. Realism in the Realized Popper's Experiment. https://arxiv.org/abs/quant-ph/0507011

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