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Experimental demonstration of quantum pigeonhole paradox

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arxiv 2103.15070 v1 pith:QMVFUNYM submitted 2021-03-28 quant-ph

Experimental demonstration of quantum pigeonhole paradox

classification quant-ph
keywords quantumparadoxpigeonholeeffectmeasurementphotonspolarizationbreaks
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We experimentally demonstrate that when three single photons transmit through two polarization channels, in a well-defined pre- and postselected ensemble, there are no two photons in the same polarization channel by weak-strength measurement, a counter-intuitive quantum counting effect called quantum pigeonhole paradox. We further show that this effect breaks down in second-order measurement. These results indicate the existence of quantum pigeonhole paradox and its operating regime.

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