Cavity Quantum Electrodynamics in solid state physics: Ultrastrong coupling and Dynamical Casimir Effect

Simone De Liberato (Université Paris Diderot РParis 7)
Thanks to their collective nature, superradiant electronic excitations in solid state systems can couple very efficiently with light, allowing to reach the so-called ultrastrong coupling regime. I will present two systems in which such regime has been observed using a two dimensional electron gas coupled to a terahertz resonator. I will show how the ultrastrong coupling regime allows the observation of new physics, most remarkably quantum vacuum phenomena closely related to the dynamical Casimir effect.
Seminar Room, Serrano 121 (CFMAC)
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