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arXiv · 2207.02077

Dynamical stabilization by vacuum fluctuations in a cavity: Resonant electron scattering in the ultrastrong light-matter coupling regime

D. A. Zezyulin·S. A. Kolodny·O. V. Kibis·I. V. Tokatly·I. V. Iorsh
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Abstract

We developed a theory of electron scattering by a short-range repulsive potential in a cavity. In the regime of ultrastrong electron coupling to the cavity electromagnetic field, the vacuum fluctuations of the field result in the dynamical stabilization of a quasistationary polariton state confined in the core of the repulsive potential. When the energy of a free electron coincides with the energy of the confined state, the extremely efficient resonant nonelastic scattering of the electron accompanied by emission of a cavity photon appears. This effect is discussed as a basis for possible free-electron sources of nonclassical light.

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D. A. Zezyulin, S. A. Kolodny, O. V. Kibis, I. V. Tokatly, I. V. Iorsh. 2022-07-05. Dynamical stabilization by vacuum fluctuations in a cavity: Resonant electron scattering in the ultrastrong light-matter coupling regime. https://doi.org/10.1103/physreva.106.043708

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