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arXiv · 2512.09558

Can Intense Quantum Light Beat Classical Uncertainty Relations?

Felipe Reibnitz Willemann·Mauro Antezza·Johannes Feist
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Abstract

Uncertainty relations are fundamental to quantum mechanics, encoding limits on the simultaneous measurement of conjugate observables. Violations of joint uncertainty bounds can certify entanglement -- a resource critical for quantum information protocols and increasingly relevant in strong-field physics. Here, we investigate the pairwise time-delay and frequency-bandwidth uncertainties for arbitrary multimode quantum states of light, deriving a general lower bound for their joint product. We find that the nonclassical correction scales inversely with the average photon number, a behavior rooted in the so-called ``monogamy of entanglement''. These results clarify the intensity scaling of quantum advantages in nonclassical light states and highlight the interplay between entanglement and photon statistics.

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Felipe Reibnitz Willemann, Mauro Antezza, Johannes Feist. 2025-12-10. Can Intense Quantum Light Beat Classical Uncertainty Relations?. https://arxiv.org/abs/2512.09558

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