Subcycle nonlinearities of ultrastrong light-matter coupling (B08*)

• Subject Area: Experimental Condensed Matter Physics
• Term: since 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 231447078

In this project we will investigate subcycle nonlinearities of highly narrowband THz cavity polaritons in the deep-strong light-matter coupling regime. Cyclotron and intersubband resonances of n-type modulation-doped GaAs/AlxGa1-xAs multi quantum wells fabricated by molecular beam epitaxy will be coupled to a novel generation of THz metal resonators exploiting spectrally narrowband quadrupolar far-field coupling. Using two-dimensional THz strong-field spectroscopy, we will investigate the subcycle nonlinearities of the resulting light-matter hybridized cavity polaritons.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 142: Tailored nonlinear photonics: From fundamental concepts to functional structures
• Applicant Institution: Universität Paderborn
• Project Heads: Professor Dr. Christoph Lange; Professor Dr. Dirk Reuter