Photon condensation, Van Vleck paramagnetism, and chiral cavities
Mesoscale and Nanoscale Physics
2024-03-25 v3 Quantum Physics
Abstract
We introduce a gauge-invariant model of planar, square molecules coupled to a quantized spatially-varying cavity electromagnetic vector potential A(r). Specifically, we choose a temporally chiral cavity hosting a uniform magnetic field B, as this is the simplest instance in which a transverse spatially-varying A(r) is at play. We show that when the molecules are in the Van Vleck paramagnetic regime, an equilibrium quantum phase transition to a photon condensate state occurs.
Keywords
Cite
@article{arxiv.2302.09964,
title = {Photon condensation, Van Vleck paramagnetism, and chiral cavities},
author = {Alberto Mercurio and Gian Marcello Andolina and Francesco M. D. Pellegrino and Omar Di Stefano and Pablo Jarillo-Herrero and Claudia Felser and Frank H. L. Koppens and Salvatore Savasta and Marco Polini},
journal= {arXiv preprint arXiv:2302.09964},
year = {2024}
}
Comments
14 pages, 3 figures