Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 71: Nano-Optics
Q 71.2: Vortrag
Freitag, 15. März 2024, 14:45–15:00, HS 3219
Dynamics of exciton-polaritons in optically driven ZnO nano-particles — 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
We implement externally excited ZnO Mie resonators in a framework of a generalized Hubbard Hamiltonian to investigate the lifetimes of excitons and exciton-polaritons out of thermodynamical equilibrium. Our results are derived by a Floquet-Keldysh-Green's functions formalism with Dynamical Mean Field Theory (DMFT) and a second order iterative per-turbation theory solver (IPT). We find polaritons that result from a Fano resonance in the sense of coupling of the continuum of the LDOS to the quantised ZnO resonator mode with lifetimes between 0.6 ps and 1.45 ps. Our results are compared to recent experiments of ZnO polariton lasers and to ZnO random lasers.
[1] A. Lubatsch, R. Frank, Appl. Sci. 2020, 10, 1836 [2] A. Lubatsch,R. Frank, Symmetry 2019, 11, 1246 [3] T.-C. Lu, et. al. Opt. Express 2012, 20, 5530
Keywords: Polaritons; ZnO; Non-Equilibrium; dynamical mean field theory (DMFT); Fano Resonance