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3 October 2022 Topologically protected edge states in continuous media: attenuation without dissipation (Conference Presentation)
Gennady B. Shvets
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Proceedings Volume PC12195, Metamaterials, Metadevices, and Metasystems 2022; PC121951O (2022) https://doi.org/10.1117/12.2636354
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
While topological properties of electromagnetic waves are commonly associated with photonic (i.e. periodic) structures, it has been recently demonstrated that even continuous media such as magnetized plasmas can support topologically protected one-way edge states. We demonstrate that, under some circumstances, such waves can be damped even without any dissipation, i.e. for a purely Hermitian permittivity tensor. Such damping is attributed to localized resonances in the inhomogeneous transition region between topologically trivial and nontrivial domains. Despite such damping, backscattering remains suppressed owing to topological protection. More complex magnetic field geometries, such as helically-winding field lines, will also be discussed.
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Gennady B. Shvets "Topologically protected edge states in continuous media: attenuation without dissipation (Conference Presentation)", Proc. SPIE PC12195, Metamaterials, Metadevices, and Metasystems 2022, PC121951O (3 October 2022); https://doi.org/10.1117/12.2636354
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KEYWORDS
Signal attenuation
Backscatter
Electromagnetic radiation
Magnetism
Plasmas
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