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arXiv:1902.07209 · Physical Review Letters

Entanglements of Electrons and Cavity Photons in the Strong-Coupling Regime

Ofer Kfir

Published Sep 6, 2019• 189 citations
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Abstract

This Letter sets a road map towards an experimental realization of strong coupling between free electrons and photons and analytically explores entanglement phenomena that emerge in this regime. The proposed model unifies the strong-coupling predictions with known electron-photon interactions. Additionally, this Letter predicts a non-Columbic entanglement between freely propagating electrons. Since strong coupling can map entanglements between photon pairs onto photon-electron pairs, it may harness electron beams for quantum communication, thus far exclusive to photons.

DOI
10.1103/physrevlett.123.103602

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