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1 August 2021 Higher-order topological photonics across temporal and spatial scales
Gennady B. Shvets
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Proceedings Volume 11796, Active Photonic Platforms XIII; 117961D (2021) https://doi.org/10.1117/12.2595189
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
Topological photonics enables unusual and robust properties of electromagnetic waves, including reflections-free photon propagation along strongly curved interfaces and localization at the corners and other discontinuities of photonic structures. Of particular interest are the so-called photonic higher-order topological insulators (PHOTIs) enabling light localization at their corners. I will discuss several examples of the PHOTIs based on coupled microwave cavities (emulating quadrupolar insulators) and new PHOTIs based on topological crystalline insulators emulating spin-orbit coupling. Strategies for developing nanoscale PHOTIs will be discussed, including metagate-controlled 2D materials. Finally, a novel regime of quantum landscaping of single-layer graphene, where periodic patterns of chemical potential simultaneously modify electronic and photonic propagation bands, will be introduced.
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Gennady B. Shvets "Higher-order topological photonics across temporal and spatial scales", Proc. SPIE 11796, Active Photonic Platforms XIII, 117961D (1 August 2021); https://doi.org/10.1117/12.2595189
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KEYWORDS
Photonics
Dielectrics
Radio propagation
Crystals
Electromagnetic radiation
Graphene
Interfaces
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