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dc.contributor.authorMaczewsky, Lukas J.
dc.contributor.authorHeinrich, Matthias
dc.contributor.authorKremer, Mark
dc.contributor.authorIvanov, Seergey K.
dc.contributor.authorEhrhardt, Max
dc.contributor.authorMartínez, Franklin
dc.contributor.authorKartashov, Yaroslav V.
dc.contributor.authorKonotop, Vladimir V.
dc.contributor.authorTorner Sabata, Lluís
dc.contributor.authorBauer, Dieter
dc.contributor.authorSzameit, Alexander
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationMaczewsky, L. [et al.]. Nonlinearity-induced photonic topological insulator. "Science (New York, N.Y.)", 6 Novembre 2020, vol. 370, núm. 6517, p. 701-704.
dc.description.abstractA 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.
dc.description.sponsorshipThe authors acknowledge funding from the Deutsche Forschungsgemeinschaft (grants SCHE 612/6-1, SZ 276/12-1, BL 574/13-1, SZ 276/15-1, SZ 276/20-1) and the Alfried Krupp von Bohlen and Halbach foundation. V.V.K. acknowledges supported from the Portuguese Foundation for Science and Technology (FCT) under Contract no. UIDB/00618/2020. Y.V.K. and S.K.I. acknowledge funding of this study by RFBR and DFG according to the research project no. 18-502-12080.
dc.format.extent4 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica
dc.subject.otherTopological insulators
dc.subject.otherOptical lattices
dc.subject.otherQuantum Hall Effect
dc.titleNonlinearity-induced photonic topological insulator
dc.contributor.groupUniversitat Politècnica de Catalunya. FOTONICA - Grup de Recerca de Fotònica
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
local.citation.authorMaczewsky, L.; Heinrich, M.; Kremer, M.; Ivanov, S.; Ehrhardt, M.; Martínez, F.; Kartashov, Y.V.; Konotop, V.; Torner, L.; Bauer, D.; Szameit, A.
local.citation.publicationNameScience (New York, N.Y.)

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