https://doi.org/10.1051/epjconf/202226608013
Non-locality and single meta-atom spectroscopy in THz Landau polaritons
1 Institute for Quantum Electronics, Department of Physics, ETH Zürich, Switzerland
2 School of Physics and Astronomy, University of Southampton, UK
* Corresponding author: scalari@phys.ethz.ch
Published online: 13 October 2022
We will discuss, theoretically and experimentally, the existence of a limit to the possibility of arbitrarily increasing electromagnetic confinement in polaritonic systems, where strongly sub-wavelength fields can excite a continuum of high-momenta propagative magnetoplasmons. This leads to peculiar nonlocal polaritonic effects, as certain polaritonic features disappear and the system enters in the regime of discrete-to-continuum strong coupling. We will as well present experiments reporting spectroscopy of a single, ultrastrongly coupled, highly subwavelength resonator operating at 300 GHz.
© The Authors, published by EDP Sciences
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
