Multidimensional topological strings by curved potentials: Simultaneous realization of a mobility edge and topological protection
| Autor: | Gang Wan, Chun-Yan Lin, Ray-Kuang Lee, Giulia Marcucci, You-Lin Chuang, Claudio Conti |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Optical fiber
Geometry 02 engineering and technology Edge (geometry) Grating Bose-Einstein condensation Curvature Topology topological photonics optical fibers photonics 01 natural sciences String (physics) law.invention law 0103 physical sciences Modulation (music) Optical fibers Electrical and Electronic Engineering 010306 general physics Physics Condensed Matter::Quantum Gases Curvilinear coordinates 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 0210 nano-technology Realization (systems) Statistical mechanics |
| Zdroj: | OSA continuum 4 (2021): 315–322. doi:10.1364/OSAC.413213 info:cnr-pdr/source/autori:Lin C.-Y.; Marcucci G.; Wan G.; Chuang Y.-L.; Conti C.; Lee R.-K./titolo:Multidimensional topological strings by curved potentials: Simultaneous realization of a mobility edge and topological protection/doi:10.1364%2FOSAC.413213/rivista:OSA continuum/anno:2021/pagina_da:315/pagina_a:322/intervallo_pagine:315–322/volume:4 |
| DOI: | 10.1364/OSAC.413213 |
| Popis: | By considering a cigar-shaped trapping potential elongated in a proper curvilinear coordinate, we discover a new form of wave localization that arises from the interplay of geometry and topological protection. The potential is undulated in its shape such that local curvature introduces a geometrical potential. The curvature varying along the trap curvilinear axis encodes a topological Harper modulation. The varying geometry maps our system in a one-dimensional Andre-Aubry-Harper grating. We show that a mobility edge exists and topologically protected states arise. These states are extremely robust against disorder in the shape of the string. The results may be relevant to localization phenomena in Bose-Einstein condensates, optical fibers and waveguides, and new laser devices. |
| Databáze: | OpenAIRE |
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