Magneto-transport controlled by Landau polariton states

By G. Paravicini-Bagliani, F. Appugliese, E. Richter, F. Valmorra, J. Keller, M. Beck, N. Bartolo, C. Rössler, T. Ihn, Klaus Ensslin and 3 more. Nature Physics, 2018

193 citations recorded by the source corpus.

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 two-dimensional electron gas in the ultrastrong coupling regime. We show that the linear direct-current resistivity is substantially 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 the presence of a weak irradiation field at sub-terahertz frequencies highlights the different roles of localized and delocalized states.A polariton is a hybrid excitation resulting from strong light–matter coupling. The magneto-transport measurements have now revealed the crucial role played by its electronic component.

Subfields: Atomic and Molecular Physics, and Optics, Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/74718145774878db91431248fea85d46e6ec292e

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In Atomic and Molecular Physics, and Optics

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Citations in the corpus

Manipulating matter by strong coupling to vacuum fields (2021, methodology): “Modification of transport properties induced by strong light-matter coupling has also been reported for inorganic materials (38).”