Classical Light Masters 'Quantum' Tricks ⚡ экспресс
Original: "Wigner function negativity in a classical model of quantum light"
Negative values in the Wigner distribution, long a hallmark of quantum systems, have been reproduced using classical light and a clever event selection.
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Classical light can mimic quantum wonders if you cleverly filter out some data. Negative values of the Wigner function, long considered a hallmark of quantumness, turned out to be achievable in a simple model with event selection. This questions the reliability of conventional tests.
🎯 In 1932, Eugene Wigner devised a way to describe quantum particles using the language of probabilities, but with a catch: negative values in his formula are not real probabilities, but a calculational trick. That's why the distribution is called a 'quasi-distribution'.