Dresden 2026 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 59: Quantum Chaos and Coherent Dynamics (joint session DY/TT)
DY 59.9: Vortrag
Freitag, 13. März 2026, 12:00–12:15, HÜL/S186
Transport through two Floquet-engineered Impurities in a One-Dimensional System: Coherent Control of Fano Resonances, BICs and Localization — •Vincenzo Bruno1,2, Ameneh Sheikhan1, Roberta Citro2,3, and Corinna Kollath1 — 1Physikalisches Institut, Universität Bonn, Nussallee 12, 53115 Bonn, Germany — 2Dipartimento di Fisica "E.R. Caianiello", Università degli Studi di Salerno and INFN, Via Giovanni Paolo II, 132, I-84084 Fisciano (Sa), Italy — 3CNR/SPIN, Fisciano (Sa), 84098, Italy
Floquet engineering has attracted considerable attention due to its ability to coherently control quantum states, finding successful applications across a wide range of fields such as quantum materials, ultracold atoms, and cavity systems. We investigate particle transport through a one-dimensional system containing two periodically driven impurities. Such a configuration is highly relevant for experimental realizations ranging from ballistic semiconductor wires and electron optics to ultracold atoms, and exhibits remarkably rich transmission properties. A central feature of this system is the emergence of Fano resonances-phenomena arising from the quantum interference between a continuum scattering path and discrete quasi-bound states. We demonstrate how drive parameters can be tuned to dynamically control these resonances. Furthermore, we reveal the existence of Bound States in the Continuum (BICs) and explore the interplay between Fano interference and cavity modes. This interplay leads to a localization mechanism where the system can be switched from a fully localized state to a regime of perfect transparency.
Keywords: Floquet Engineering; Non-Equilibrium Transport; Fano Resonance; Bound States in the Continuum (BICs); Coherent Control of Localization