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arXiv:quant-ph/0507121 · American Journal of Physics

Popper’s experiment and communication

E. Gerjuoy, Andrew M. Sessler

Published Jul 1, 2006• 7 citations
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Abstract

We comment on an analysis by Qureshi of an experiment proposed by Popper and show that an analysis based solely on conventional nonrelativistic quantum mechanics is sufficient to exclude the possibility of subluminal or superluminal communication. That is, local operations cannot be employed to transmit information.
DOI
10.1119/1.2190684

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A thought experiment, proposed by Karl Popper, which has been experimentally realized recently, is critically examined. A basic flaw in Popper's argument which has also been prevailing in subsequent debates, is pointed out. It is shown that Popper's experiment can be understood easily within the Copenhagen interpretation of quantum mechanics. An alternate experiment, based on discrete variables, is proposed, which constitutes Popper's test in a clearer way. It refutes the argument of absence of nonlocality in quantum mechanics.
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