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This research demonstrates how nonlinear interactions in Floquet topological insulators can be tuned to suppress energy dissipation, enabling robust chiral edge transport even when coupled to an external bath. By forming localized traveling solitons at an optimal nonlinearity threshold, the study offers a novel pathway for controlling system-bath coupling in photonic and quantum devices. These findings advance the theoretical understanding of topological protection mechanisms relevant to future low-loss quantum information architectures.
Nonlinearity-Induced Suppression of Dissipation in Bath-Coupled Floquet Topological Insulators
arXiv:2611.04752v1 Announce Type: cross Abstract: Topological insulators can host chiral, disorder-robust edge states that dissipate energy when coupled to an external bath. We show that nonlinear interactions enable all-optical control over edge-state dissipation in a laser-written Floquet topological insulator periodically coupled to a photonic bath. Although moderate nonlinearity enhances dissipation due to mode mixing, increasing the nonlinear strength to an optimal value dramatically suppresses dissipation by forming highly localized traveling edge solitons. These results establish engineered system-bath coupling and nonlinear interactions as a route to suppress dissipation of chiral topological edge transport.
Abstract:Topological insulators can host chiral, disorder-robust edge states that dissipate energy when coupled to an external bath. We show that nonlinear interactions enable all-optical control over edge-state dissipation in a laser-written Floquet topological insulator periodically coupled to a photonic bath. Although moderate nonlinearity enhances dissipation due to mode mixing, increasing the nonlinear strength to an optimal value dramatically suppresses dissipation by forming highly localized traveling edge solitons. These results establish engineered system-bath coupling and nonlinear interactions as a route to suppress dissipation of chiral topological edge transport.
5 pages and supplementary. Comments are welcome
Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Pattern Formation and Solitons (nlin.PS); Optics (physics.optics); Quantum Physics (quant-ph)
arXiv:2611.04752 [cond-mat.mes-hall]
(or arXiv:2611.04752v1 [cond-mat.mes-hall] for this version)
https://doi.org/10.48550/arXiv.2611.04752 Focus to learn more arXiv-issued DOI via DataCite (pending registration)
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