Demonstration of nonlinearity-induced coupling to topological edge and interface states

Shiqi Xia; Nan Wang; Daria Smirnova; Lev Smirnov; Liqin Tang; Liqin Tang; Daohong Song; Daohong Song; Alexander Szameit; Daniel Leykam; Zhigang Chen; Zhigang Chen

doi:10.1364/CLEO_QELS.2020.FW4A.7

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2020),
paper FW4A.7
•https://doi.org/10.1364/CLEO_QELS.2020.FW4A.7

Demonstration of nonlinearity-induced coupling to topological edge and interface states

Shiqi Xia, Nan Wang, Daria Smirnova, Lev Smirnov, Liqin Tang, Daohong Song, Alexander Szameit, Daniel Leykam, and Zhigang Chen

CLEO: QELS_Fundamental Science 2020

Washington, DC United States
10–15 May 2020
ISBN: 978-1-943580-76-7

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Topological Photonics II (FW4A)

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S. Xia, N. Wang, D. Smirnova, L. Smirnov, L. Tang, D. Song, A. Szameit, D. Leykam, and Z. Chen, "Demonstration of nonlinearity-induced coupling to topological edge and interface states," in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optica Publishing Group, 2020), paper FW4A.7.

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Abstract

We observe nonlinearity-induced excitation of topological edge and interface states in a photonic SSH lattice, where two beams from opposite directions are coupled into (reflected from) nontrivial defect channel under nonlinear (linear) excitation upon collision.

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