Abstract
Ultrastrong coupling (USC) regime has been an intriguing research topic in cavity quantum electrodynamics (QED) experiments due to its capability to modify the ground and the excited states of a coupled system[1–3]. We investigate the USC of Landau level (LL) transitions in a two dimensional electron gas to teraherz (THz) metasurfaces using THz time domain spectroscopy. Complementary THz split ring resonator (cSRR) arrays are used as meta-surfaces [4]. A higher coupling rate can be achieved by reducing the capacitive gap of the resonator due to the increased vacuum field fluctuations. However, our results indicate that this reduction introduces an inhomoge-nous broadening of the upper polariton branch below a threshold gap width.
© 2019 IEEE
PDF ArticleMore Like This
G. Scalari, C. Maissen, S. Cibella, R. Leoni, E. Giovine, P. Carelli, D. Hagenmüller, S. De Liberato, C. Ciuti, F. Valmorra, M. Beck, and J. Faist
II_1_2 International Quantum Electronics Conference (IQEC) 2013
G. Scalari, J. Keller, S. Cibella, C. Maissen, R. Leoni, M. Beck, and J. Faist
EG_5_2 European Quantum Electronics Conference (EQEC) 2017
Shima Rajabali, Erika Cortese, Mattias Beck, Simone De Liberato, Jérôme Faist, and Giacomo Scalari
eg_3_1 European Quantum Electronics Conference (EQEC) 2021