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Nonlinearity-induced photonic topological insulator

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Maczewsky et al.pdf (801,3Kb)
 
10.1126/science.abd2033
 
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hdl:2117/339427

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Maczewsky, Lukas J.
Heinrich, Matthias
Kremer, Mark
Ivanov, Seergey K.
Ehrhardt, Max
Martínez, Franklin
Kartashov, Yaroslav V.
Konotop, Vladimir V.
Torner Sabata, LluísMés informacióMés informació
Bauer, Dieter
Szameit, Alexander
Document typeArticle
Defense date2020-11-06
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
A hallmark feature of topological insulators is robust edge transport that is impervious to scattering at defects and lattice disorder. We demonstrate a topological system, using a photonic platform, in which the existence of the topological phase is brought about by optical nonlinearity. The lattice structure remains topologically trivial in the linear regime, but as the optical power is increased above a certain power threshold, the system is driven into the topologically nontrivial regime. This transition is marked by the transient emergence of a protected unidirectional transport channel along the edge of the structure. Our work studies topological properties of matter in the nonlinear regime, providing a possible route for the development of compact devices that harness topological features in an on-demand fashion.
CitationMaczewsky, L. [et al.]. Nonlinearity-induced photonic topological insulator. "Science (New York, N.Y.)", 6 Novembre 2020, vol. 370, núm. 6517, p. 701-704. 
URIhttp://hdl.handle.net/2117/339427
DOI10.1126/science.abd2033
ISSN1095-9203
Publisher versionhttps://science.sciencemag.org/content/370/6517/701
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