Mainz 2026 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 3: Collisions, Scattering and Correlation Phenomena I (joint session A/MO)

MO 3.3: Vortrag

Montag, 2. März 2026, 12:15–12:30, N 2

Transport resonances through periodically driven, weakly coupled impurity — •Jan Mathis Giesen, Daniel Weber, and Sebastian Eggert — Physics Department and Research Center OPTIMAS, RPTU University Kaiserslautern-Landau, D-67663 Kaiserslautern, Germany

We consider transport in an optical lattice through quantum well with time periodic driving and apply Floquet theory to calculate tunneling amplitudes. An analytic non-equilibrium solution of the problem is developed which allows the analytic prediction and analysis of the tunneling amplitudes as a function of frequency, driving amplitude, and energy level of the well. One main result is the discovery of a previously unknown resonant switching effect, where a very small driving field can induce perfect transmission. The results are relevant for corresponding setups using ultra-cold gases in optical lattices, photonic waveguides, quantum dots coupled to metallic leads or magnonic systems.

Keywords: Floquet; Tunneling resonances; Transport; Quantum dot