Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling
In this paper, we investigate topological states in a two-dimensional distorted Kagome lattice with next- nearest-neighbour (NNN) coupling. We show that introducing NNN coupling leads to the emergence of a new type of higher-order corner states in a non-trivial topological phase. Using near-field sc...
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| creator | Zhirihin, D. Li, M. Gorlach, M. Ni, X. Filonov, D. Slobozhanyuk, A. Alu, A. Khanikaev, A. B. |
| description | In this paper, we investigate topological states in a two-dimensional distorted Kagome lattice with next- nearest-neighbour (NNN) coupling. We show that introducing NNN coupling leads to the emergence of a new type of higher-order corner states in a non-trivial topological phase. Using near-field scanning technique, we verify our theoretical predictions in the microwave frequency range and demonstrate field profiles for both conventional and new type of corner states. The experimental results are in perfect agreement with numerical simulations of finite structure. |
| doi_str_mv | 10.1063/5.0032066 |
| format | Conference Proceeding |
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B.</creatorcontrib><title>Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling</title><title>AIP conference proceedings</title><description>In this paper, we investigate topological states in a two-dimensional distorted Kagome lattice with next- nearest-neighbour (NNN) coupling. We show that introducing NNN coupling leads to the emergence of a new type of higher-order corner states in a non-trivial topological phase. Using near-field scanning technique, we verify our theoretical predictions in the microwave frequency range and demonstrate field profiles for both conventional and new type of corner states. 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| language | eng |
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| source | AIP Journals Complete |
| subjects | Coupling Frequency ranges Kagome lattice Microwave frequencies Topology |
| title | Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling |
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