Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 57: Poster VIII
Q 57.17: Poster
Thursday, March 14, 2024, 17:00–19:00, Aula Foyer
Evolution of Floquet topological quantum states in drivensemiconductors — Andreas Lubatsch1 and •Regine Frank2,3 — 1Physikalisches Institut, Rheinische Friedrich Wilhelms Universitaet Bonn — 2College of Biomedical Sciences, Larkin University, Miami, Florida, USA — 3Donostia International Physics Center, 20018 Donostia-San Sebastian, Spain
Spatially uniform excitations can induce Floquet topological band-structures within insulators which have equal characteristics to those of topological insulators. We demonstrate the evolution of Floquet topological quantum states for electromagnetically driven semiconductor bulk matter. We show the direct physical impact of the mathematical precision of the Floquet-Keldysh theory when we solve the driven system of a generalized Hubbard model with our framework of dynamical mean field theory (DMFT) in the non-equilibrium with physical consequences for opto-electronic applications. [1] A. Lubatsch, R. Frank, Eur. Phys. J. B (2019) 92: 215 [2] A.Lubatsch, R. Frank, Symmetry 2019, 11, 1246 [3] P.-C. Chang, J.G.Lu, Appl. Phys. Lett. 2008, 92, 212113
Keywords: ultrashort excitations; topolgical effects; ZnO; higher harmonics generation; Floquet physics