Magneto-transport controlled by Landau polariton states
Abstract
Hybrid excitations, called polaritons, emerge in systems with strong light-matter coupling. Usually, they dominate the linear and nonlinear optical properties with applications in quantum optics. Here, we show the crucial role of the electronic component of polaritons in the magneto-transport of a cavity-embedded 2D electron gas in the ultrastrong coupling regime. We show that the linear dc resistivity is significantly modified by the coupling to the cavity even without external irradiation. Our observations confirm recent predictions of vacuum-induced modification of the resistivity. Furthermore, photo-assisted transport in presence of a weak irradiation field at sub-THz frequencies highlights the different roles of localized and delocalized states.
Keywords
Cite
@article{arxiv.1805.00846,
title = {Magneto-transport controlled by Landau polariton states},
author = {Gian L. Paravicini-Bagliani and Felice Appugliese and Eli Richter and Federico Valmorra and Janine Keller and Mattias Beck and Nicola Bartolo and Clemens Rössler and Thomas Ihn and Klaus Ensslin and Cristiano Ciuti and Giacomo Scalari and Jerome Faist},
journal= {arXiv preprint arXiv:1805.00846},
year = {2019}
}
Comments
Accepted for Nature Physics