Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling

D. Zhirihin; M. Li; M. Gorlach; X. Ni; D. Filonov; A. Slobozhanyuk; A. Alu; A. B. Khanikaev

doi:10.1063/5.0032066

Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling

D. Zhirihin, M. Li, M. Gorlach, X. Ni, D. Filonov, A. Slobozhanyuk, A. Alu, A. B. Khanikaev

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

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.

Original language	English
Title of host publication	5th International Conference on Metamaterials and Nanophotonics, METANANO 2020
Editors	Pavel Belov, Mihail Petrov
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735440340
DOIs	https://doi.org/10.1063/5.0032066
State	Published - 8 Dec 2020
Externally published	Yes
Event	5th International Conference on Metamaterials and Nanophotonics, METANANO 2020 - St. Petersburg, Virtual, Russian Federation Duration: 14 Sep 2020 → 18 Sep 2020

Publication series

Name	AIP Conference Proceedings
Volume	2300
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	5th International Conference on Metamaterials and Nanophotonics, METANANO 2020
Country/Territory	Russian Federation
City	St. Petersburg, Virtual
Period	14/09/20 → 18/09/20

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10.1063/5.0032066

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Zhirihin, D., Li, M., Gorlach, M., Ni, X., Filonov, D., Slobozhanyuk, A., Alu, A., & Khanikaev, A. B. (2020). Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling. In P. Belov, & M. Petrov (Eds.), 5th International Conference on Metamaterials and Nanophotonics, METANANO 2020 [020139] (AIP Conference Proceedings; Vol. 2300). American Institute of Physics Inc.. https://doi.org/10.1063/5.0032066

Zhirihin, D. ; Li, M. ; Gorlach, M. ; Ni, X. ; Filonov, D. ; Slobozhanyuk, A. ; Alu, A. ; Khanikaev, A. B. / Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling. 5th International Conference on Metamaterials and Nanophotonics, METANANO 2020. editor / Pavel Belov ; Mihail Petrov. American Institute of Physics Inc., 2020. (AIP Conference Proceedings).

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title = "Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling",

abstract = "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. ",

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Zhirihin, D, Li, M, Gorlach, M, Ni, X, Filonov, D, Slobozhanyuk, A, Alu, A & Khanikaev, AB 2020, Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling. in P Belov & M Petrov (eds), 5th International Conference on Metamaterials and Nanophotonics, METANANO 2020., 020139, AIP Conference Proceedings, vol. 2300, American Institute of Physics Inc., 5th International Conference on Metamaterials and Nanophotonics, METANANO 2020, St. Petersburg, Virtual, Russian Federation, 14/09/20. https://doi.org/10.1063/5.0032066

Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling. / Zhirihin, D.; Li, M.; Gorlach, M.; Ni, X.; Filonov, D.; Slobozhanyuk, A.; Alu, A.; Khanikaev, A. B.

5th International Conference on Metamaterials and Nanophotonics, METANANO 2020. ed. / Pavel Belov; Mihail Petrov. American Institute of Physics Inc., 2020. 020139 (AIP Conference Proceedings; Vol. 2300).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Filonov, D.

AU - Slobozhanyuk, A.

AU - Alu, A.

AU - Khanikaev, A. B.

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AB - 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.

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Zhirihin D, Li M, Gorlach M, Ni X, Filonov D, Slobozhanyuk A et al. Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling. In Belov P, Petrov M, editors, 5th International Conference on Metamaterials and Nanophotonics, METANANO 2020. American Institute of Physics Inc. 2020. 020139. (AIP Conference Proceedings). https://doi.org/10.1063/5.0032066

Demonstration of higher-order topological States in photonic kagome lattice with next-nearest-neighbour coupling

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