Dresden 2026 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 92: Transport – Poster

TT 92.8: Poster

Thursday, March 12, 2026, 18:00–20:00, P4

Transmission resonances for periodically driven local potentials — •Daniel Weber — RPTU University Kaiserslautern-Landau, D-67663 Kaiserslautern, Germany

We model tunneling trough a quantum dot using a locally driven 1D tight-binding Hamiltonian. Using Floquet theory, we produce exact numerical results before we derive an analytic prediction of position and amplitude of transmission resonance in dependence of driving frequency, coupling strength and local energy levels. Starting with a suitable transformation of the Hamiltonian, we use a high frequency approximation to derive a valid analytical approximation for frequencies in the systems energy scales. The results can be used for the design of efficient nano-electronic devices, in photonic waveguides or can be useful for ultra-cold gages in optical lattices.

Keywords: Transport resonances; Transport; Floquet; Quantum dot; Tunneling