Nonlinear topological transitions over a metasurface

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PhysRevB.100.214310.pdf (1.52 MB)

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https://journals.aps.org/prb/abstract/10.1103/PhysRevB.100.214310
 https://journals-aps-org.proxy-bc.researchport.umd.edu/prb/supplemental/10.1103/PhysRevB.100.214310/LowIntensity.avi
 https://journals-aps-org.proxy-bc.researchport.umd.edu/prb/supplemental/10.1103/PhysRevB.100.214310/HighIntensity.avi

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https://doi.org/10.1103/PhysRevB.100.214310
 http://hdl.handle.net/11603/18559

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UMBC Computer Science and Electrical Engineering Department
UMBC Faculty Collection

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2019-12-19

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journal articles
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D’Aguanno, et al.; Nonlinear topological transitions over a metasurface; Physical Review B 100, 214310 (2019); https://journals.aps.org/prb/abstract/10.1103/PhysRevB.100.214310

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©2019 American Physical Society

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Abstract

We demonstrate a self-induced topological transition and the formation of topologically protected edge states in a two-dimensional array of coupled resonant cavities placed on a Kagome lattice with saturable nonlinearity introduced in the interconnecting bonds. The dynamic response of the structure is shown to be governed by an intensity-dependent band topology. Our findings uncover prospects for generating and controlling topologically nontrivial edge modes in nonlinear metasurfaces, and delineate a roadmap towards self-reconfigurable robust signal transport in various dynamic systems, ranging from acoustics to electronics and optics.