Photonic topological Chern insulators based on Tellegen metacrystals
We demonstrate that topologically nontrivial states of light can be engineered in periodic photonic structures containing media with a Tellegen-type bianisotropic response. Whilst in such bianisotropic materials the time-reversal symmetry is broken, they are characterized by an intrinsic magnetic or...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/12/125015 |
| _version_ | 1797751225209323520 |
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| author | Daniel A Jacobs Andrey E Miroshnichenko Yuri S Kivshar Alexander B Khanikaev |
| author_facet | Daniel A Jacobs Andrey E Miroshnichenko Yuri S Kivshar Alexander B Khanikaev |
| author_sort | Daniel A Jacobs |
| collection | DOAJ |
| description | We demonstrate that topologically nontrivial states of light can be engineered in periodic photonic structures containing media with a Tellegen-type bianisotropic response. Whilst in such bianisotropic materials the time-reversal symmetry is broken, they are characterized by an intrinsic magnetic order which does not require macroscopic magnetization. Our design can therefore be considered as a direct analog of the solid state Chern insulator which exhibits a topological order in the absence of an external bias. Numerical simulations of such Tellegen photonic crystals reveal the existence of one-way edge transport at domain walls and perfectly conducting boundaries not sensitive to structural imperfections such as local defects and disorder. We demonstrate a scheme for achieving robust steering of the edge modes by controlling the phase and amplitude of the source. |
| first_indexed | 2024-03-12T16:45:27Z |
| format | Article |
| id | doaj.art-5561b40b53294ba8a0276edfbf9df5b6 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:45:27Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-5561b40b53294ba8a0276edfbf9df5b62023-08-08T14:15:24ZengIOP PublishingNew Journal of Physics1367-26302015-01-01171212501510.1088/1367-2630/17/12/125015Photonic topological Chern insulators based on Tellegen metacrystalsDaniel A Jacobs0Andrey E Miroshnichenko1Yuri S Kivshar2Alexander B Khanikaev3Nonlinear Physics Center, Australian National University , Canberra ACT 0200, AustraliaNonlinear Physics Center, Australian National University , Canberra ACT 0200, AustraliaNonlinear Physics Center, Australian National University , Canberra ACT 0200, AustraliaDepartment of Physics, Queens College of The City University of New York , Queens, NY 11367, USA; Graduate Center of The City University of New York , New York, NY 10016, USAWe demonstrate that topologically nontrivial states of light can be engineered in periodic photonic structures containing media with a Tellegen-type bianisotropic response. Whilst in such bianisotropic materials the time-reversal symmetry is broken, they are characterized by an intrinsic magnetic order which does not require macroscopic magnetization. Our design can therefore be considered as a direct analog of the solid state Chern insulator which exhibits a topological order in the absence of an external bias. Numerical simulations of such Tellegen photonic crystals reveal the existence of one-way edge transport at domain walls and perfectly conducting boundaries not sensitive to structural imperfections such as local defects and disorder. We demonstrate a scheme for achieving robust steering of the edge modes by controlling the phase and amplitude of the source.https://doi.org/10.1088/1367-2630/17/12/125015topological orderphotonic crystalsmetamaterials |
| spellingShingle | Daniel A Jacobs Andrey E Miroshnichenko Yuri S Kivshar Alexander B Khanikaev Photonic topological Chern insulators based on Tellegen metacrystals New Journal of Physics topological order photonic crystals metamaterials |
| title | Photonic topological Chern insulators based on Tellegen metacrystals |
| title_full | Photonic topological Chern insulators based on Tellegen metacrystals |
| title_fullStr | Photonic topological Chern insulators based on Tellegen metacrystals |
| title_full_unstemmed | Photonic topological Chern insulators based on Tellegen metacrystals |
| title_short | Photonic topological Chern insulators based on Tellegen metacrystals |
| title_sort | photonic topological chern insulators based on tellegen metacrystals |
| topic | topological order photonic crystals metamaterials |
| url | https://doi.org/10.1088/1367-2630/17/12/125015 |
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