Reconfigurable topological states in arrays of bianisotropic particles
| Autor: | Zuxian He, Daniel A. Bobylev, Daria A. Smirnova, Dmitry V. Zhirihin, Maxim A. Gorlach, Vladimir R. Tuz |
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| Rok vydání: | 2022 |
| Předmět: |
Condensed Matter - Mesoscale and Nanoscale Physics
Mesoscale and Nanoscale Physics (cond-mat.mes-hall) FOS: Physical sciences Physics - Applied Physics Applied Physics (physics.app-ph) Electrical and Electronic Engineering Atomic and Molecular Physics and Optics Biotechnology Electronic Optical and Magnetic Materials Physics - Optics Optics (physics.optics) |
| DOI: | 10.48550/arxiv.2202.11505 |
| Popis: | Topological photonics promotes a novel approach to resilient light manipulation by exploiting spatio-temporal symmetries of the system and dual symmetry of electromagnetic field. Various prospective device applications pose the need to flexibly control robust field localization associated with topological modes. Here we design a topological array of resonant dielectric meta-atoms with bianisotropic response induced by a spatial symmetry reduction. Mutual orientation of the designed meta-atoms encodes a staggered bianisotropy pattern capable of trapping topological states in a one-dimensional array containing a small number of particles. We show that the topological interface state can be tailored by the rotation of coaxial bianisotropic particles arranged in an equidistant lattice. Our experimental implementation based on ceramic horseshoe-shaped disks demonstrates remarkable reconfigurability of electromagnetic topological states. |
| Databáze: | OpenAIRE |
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