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 the quantum pigeonhole paradox. We further show that this effect breaks down in second-order measurement. These results indicate the existence of the quantum pigeonhole paradox and its operating regime.
CITATION STYLE
Chen, M. C., Liu, C., Luo, Y. H., Huang, H. L., Wang, B. Y., Wang, X. L., … Pan, J. W. (2019). Experimental demonstration of quantum pigeonhole paradox. Proceedings of the National Academy of Sciences of the United States of America, 116(5), 1549–1552. https://doi.org/10.1073/pnas.1815462116
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