Physical Review A 106, 043708 (2022)

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

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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Doi

http://dx.doi.org/10.1103/PhysRevA.106.043708

arxiv

http://arxiv.org/abs/arXiv:2207.02077

Related Research Areas

• Electronic and Thermal transport
• Open quantum systems
• Strong light-matter interactions and Optimal control Theory