Photonic topological Anderson insulator in a two-dimensional atomic lattice
Disorder in atomic positions can induce a topologically nontrivial phase—topological Anderson insulator (TAI)—for transverse electric optical quasimodes of a two-dimensional honeycomb lattice of immobile atoms. TAI requires both time-reversal and inversion symmetries to be broken to similar extents....
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| Format: | Article |
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Académie des sciences
2023-04-01
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| Series: | Comptes Rendus. Physique |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.147/ |
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| author | Skipetrov, Sergey E. Wulles, Pierre |
| author_facet | Skipetrov, Sergey E. Wulles, Pierre |
| author_sort | Skipetrov, Sergey E. |
| collection | DOAJ |
| description | Disorder in atomic positions can induce a topologically nontrivial phase—topological Anderson insulator (TAI)—for transverse electric optical quasimodes of a two-dimensional honeycomb lattice of immobile atoms. TAI requires both time-reversal and inversion symmetries to be broken to similar extents. It is characterized by a nonzero topological invariant, a reduced density of states and spatially localized quasimodes in the bulk, as well as propagating edge states. A transition from TAI to the topological insulator (TI) phase can take place at a constant value of the topological invariant, showing that TAI and TI represent the same topological phase. |
| format | Article |
| id | doaj-art-d22b8531936a4332b2cba02f67861b66 |
| institution | Kabale University |
| issn | 1878-1535 |
| language | English |
| publishDate | 2023-04-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Physique |
| spelling | doaj-art-d22b8531936a4332b2cba02f67861b662025-02-07T13:53:11ZengAcadémie des sciencesComptes Rendus. Physique1878-15352023-04-0124S3395410.5802/crphys.14710.5802/crphys.147Photonic topological Anderson insulator in a two-dimensional atomic latticeSkipetrov, Sergey E.0https://orcid.org/0000-0001-6186-1929Wulles, Pierre1https://orcid.org/0000-0002-0810-3464Univ. Grenoble Alpes, CNRS, LPMMC, 38000 Grenoble, FranceUniv. Grenoble Alpes, CNRS, LPMMC, 38000 Grenoble, FranceDisorder in atomic positions can induce a topologically nontrivial phase—topological Anderson insulator (TAI)—for transverse electric optical quasimodes of a two-dimensional honeycomb lattice of immobile atoms. TAI requires both time-reversal and inversion symmetries to be broken to similar extents. It is characterized by a nonzero topological invariant, a reduced density of states and spatially localized quasimodes in the bulk, as well as propagating edge states. A transition from TAI to the topological insulator (TI) phase can take place at a constant value of the topological invariant, showing that TAI and TI represent the same topological phase.https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.147/Topological photonicsLight scattering by atomsDisorderTopological Anderson insulatorBott index |
| spellingShingle | Skipetrov, Sergey E. Wulles, Pierre Photonic topological Anderson insulator in a two-dimensional atomic lattice Comptes Rendus. Physique Topological photonics Light scattering by atoms Disorder Topological Anderson insulator Bott index |
| title | Photonic topological Anderson insulator in a two-dimensional atomic lattice |
| title_full | Photonic topological Anderson insulator in a two-dimensional atomic lattice |
| title_fullStr | Photonic topological Anderson insulator in a two-dimensional atomic lattice |
| title_full_unstemmed | Photonic topological Anderson insulator in a two-dimensional atomic lattice |
| title_short | Photonic topological Anderson insulator in a two-dimensional atomic lattice |
| title_sort | photonic topological anderson insulator in a two dimensional atomic lattice |
| topic | Topological photonics Light scattering by atoms Disorder Topological Anderson insulator Bott index |
| url | https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.147/ |
| work_keys_str_mv | AT skipetrovsergeye photonictopologicalandersoninsulatorinatwodimensionalatomiclattice AT wullespierre photonictopologicalandersoninsulatorinatwodimensionalatomiclattice |