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TT: Fachverband Tiefe Temperaturen
TT 27: Correlated Electrons: Other Materials
TT 27.5: Talk
Tuesday, March 19, 2024, 10:30–10:45, H 3010
Dynamics of exciton-polaritons in optically driven ZnO nano-particles — Andreas Lubatsch1 and •Regine Frank2,3 — 1Physikalisches Institut, Rheinische Friedrich Wilhelms Universität 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 outthermodynamical equilibrium. Our results are derived by a Floquet-Keldysh-Green’s formalism with Dynamical Mean Field Theory (DMFT) and a second order iterative perturbation theory solver (IPT). We find polaritons that result from the Fano resonance in the sense of coupling of the continuum of the LDOS to the ZnO resonator with lifetimes between 0.6 ps and 1.45 ps. Our results are compared to rescent experiments of ZnO polariton lasers and to ZnO random lasers.
[1] A. Lubatsch, R. Frank, Appl. Sci. 10 (2020) 1836
[2] A. Lubatsch, R. Frank, Symmetry 11 (2019) 1246
[3] T.-C. Lu, et. al., Opt. Express 20 (2010) 5530
Keywords: Polaritons; Dynamical Mean Field Theory in the Non-Equilibrium; Topological Effects; Random Lasers; Fano Resonance