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. 2022 May 4;9(5):1483–1499. doi: 10.1021/acsphotonics.1c01874

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© 2022 The Authors. Published by American Chemical Society

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Nonlinear topological nanoparticle photonics: (a) Higher-order harmonic generation with zigzag arrays of dielectric nanoparticles. Figure adapted with permission from ref (34). Copyright 2009 Nature Publishing Group. (b) Nonlinear imaging of edge and corner states in 2D arrays of dielectric pillars, adapted with permission from ref (129). Copyright 2021 American Chemical Society. Lasing from the edge states of (c) topological insulator nanoparticles²³ and dielectric nanoparticles.⁸⁰ Images from refs (23) and (80) licensed under CC BY 4.0, https://creativecommons.org/licenses/by/4.0/. (d) Many-body quantum topological phases of light exploiting nonlinear effects.