Observation of nonlinear corner states in a higher-order photonic topological insulator

M. S. Kirsch; Y. Zhang; L. J. Maczewsky; S. K. Ivanov; Y. V. Kartashov; Y. V. Kartashov; L. Torner; D. Bauer; A. Szameit; M. Heinrich

doi:10.1364/CLEO_QELS.2021.FTh4H.2

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2021),
paper FTh4H.2
•https://doi.org/10.1364/CLEO_QELS.2021.FTh4H.2

Observation of nonlinear corner states in a higher-order photonic topological insulator

M. S. Kirsch, Y. Zhang, L. J. Maczewsky, S. K. Ivanov, Y. V. Kartashov, L. Torner, D. Bauer, A. Szameit, and M. Heinrich

CLEO: QELS_Fundamental Science 2021

San Jose, California United States
9–14 May 2021
ISBN: 978-1-943580-91-0

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Topological Photonics III (FTh4H)

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M. S. Kirsch, Y. Zhang, L. J. Maczewsky, S. K. Ivanov, Y. V. Kartashov, L. Torner, D. Bauer, A. Szameit, and M. Heinrich, "Observation of nonlinear corner states in a higher-order photonic topological insulator," in Conference on Lasers and Electro-Optics, J. Kang, S. Tomasulo, I. Ilev, D. Müller, N. Litchinitser, S. Polyakov, V. Podolskiy, J. Nunn, C. Dorrer, T. Fortier, Q. Gan, and C. Saraceno, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper FTh4H.2.

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Abstract

We experimentally investigate the nonlinear Kerr dynamics in higher-order photonic topological insulators. The topologically protected corner states are robust against nonlinear perturbations and indicates its transition passage through bulk-bands by a brief intermediate delocalization.

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