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Main Authors:	Bruno, Vincenzo, Kollath, Corinna, Citro, Roberta, Sheikhan, Ameneh
Format:	Preprint
Published:	2026
Subjects:	Quantum Gases Quantum Physics
Online Access:	https://arxiv.org/abs/2605.31592
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author	Bruno, Vincenzo Kollath, Corinna Citro, Roberta Sheikhan, Ameneh
author_facet	Bruno, Vincenzo Kollath, Corinna Citro, Roberta Sheikhan, Ameneh
contents	Floquet engineering offers powerful tools to manipulate quantum states by periodically driving physical parameters. In this work, we investigate the quantum transport through two periodically driven impurities in a mesoscopic one-dimensional channel. By mapping the time-dependent Hamiltonian into an effective multichannel scattering problem, we unveil a rich landscape of transport phenomena arising from the interplay between Fabry-Perot cavity modes and Fano interference. We demonstrate that the inter-impurity distance acts as a critical control parameter, allowing for the formation of Bound States in the Continuum (BICs). Furthermore, we identify Quasi-BICs, extremely narrow resonances with finite lifetimes, that can be dynamically tuned by the drive amplitude. We show that these states enable a robust coherent trapping mechanism, allowing the system to switch from perfect transparency or reflection to strong localization with giant Wigner time delays. Our results suggest possible applications for tunable delay lines and quantum memories, with feasible experimental realizations in the context of cold atoms.
format	Preprint
id	arxiv_https___arxiv_org_abs_2605_31592
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	Floquet Engineering of Quantum Transport through two Driven Impurities Bruno, Vincenzo Kollath, Corinna Citro, Roberta Sheikhan, Ameneh Quantum Gases Quantum Physics Floquet engineering offers powerful tools to manipulate quantum states by periodically driving physical parameters. In this work, we investigate the quantum transport through two periodically driven impurities in a mesoscopic one-dimensional channel. By mapping the time-dependent Hamiltonian into an effective multichannel scattering problem, we unveil a rich landscape of transport phenomena arising from the interplay between Fabry-Perot cavity modes and Fano interference. We demonstrate that the inter-impurity distance acts as a critical control parameter, allowing for the formation of Bound States in the Continuum (BICs). Furthermore, we identify Quasi-BICs, extremely narrow resonances with finite lifetimes, that can be dynamically tuned by the drive amplitude. We show that these states enable a robust coherent trapping mechanism, allowing the system to switch from perfect transparency or reflection to strong localization with giant Wigner time delays. Our results suggest possible applications for tunable delay lines and quantum memories, with feasible experimental realizations in the context of cold atoms.
title	Floquet Engineering of Quantum Transport through two Driven Impurities
topic	Quantum Gases Quantum Physics
url	https://arxiv.org/abs/2605.31592

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