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A light imprint

In a study on high-harmonic generation from a dense atomic xenon gas, the strong-field light–matter interaction is shown to leave a quantum mechanical imprint on the incident light that escapes the semiclassical picture of strong-field physics.

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Fig. 1: Wigner representations of Schrödinger kitten, cat and independent states.


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Correspondence to Thomas Fennel.

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Fennel, T. A light imprint. Nat. Phys. 17, 1075–1076 (2021).

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