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quant-ph2020★ 50 cited
Thermodynamics of ultrastrongly coupled light-matter systems
Philipp Pilar, Daniele De Bernardis, Peter Rabl
We study the thermodynamic properties of a system of two-level dipoles that are coupled ultrastrongly to a single cavity mode. By using exact numerical and approximate analytical m…
quant-ph2018★ 186 cited
Breakdown of gauge invariance in ultrastrong-coupling cavity QED
Daniele De Bernardis, Philipp Pilar, Tuomas Jaako +2
We revisit the derivation of Rabi- and Dicke-type models, which are commonly used for the study of quantum light-matter interactions in cavity and circuit QED. We demonstrate that…