Topological moiré polaritons
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
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| _version_ | 1866909161928785920 |
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| author | Septembre, I. Leblanc, C. Solnyshkov, D. D. Malpuech, G. |
| author_facet | Septembre, I. Leblanc, C. Solnyshkov, D. D. Malpuech, G. |
| contents | The combination of an in-plane honeycomb potential and of a photonic spin-orbit coupling (SOC) emulates a photonic/polaritonic analog of bilayer graphene. We show that modulating the SOC magnitude allows to change the overall lattice periodicity, emulating any type of moiré-arranged bilayer graphene with a unique all-optical access to the moiré band topology. We show that breaking the time-reversal symmetry by an effective exciton-polariton Zeeman splitting opens a large topological gap in the array of moiré flat bands. This gap contains one-way topological edge states whose constant group velocity makes an increasingly sharp contrast with the flattening moiré bands. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_03949 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Topological moiré polaritons Septembre, I. Leblanc, C. Solnyshkov, D. D. Malpuech, G. Mesoscale and Nanoscale Physics Optics The combination of an in-plane honeycomb potential and of a photonic spin-orbit coupling (SOC) emulates a photonic/polaritonic analog of bilayer graphene. We show that modulating the SOC magnitude allows to change the overall lattice periodicity, emulating any type of moiré-arranged bilayer graphene with a unique all-optical access to the moiré band topology. We show that breaking the time-reversal symmetry by an effective exciton-polariton Zeeman splitting opens a large topological gap in the array of moiré flat bands. This gap contains one-way topological edge states whose constant group velocity makes an increasingly sharp contrast with the flattening moiré bands. |
| title | Topological moiré polaritons |
| topic | Mesoscale and Nanoscale Physics Optics |
| url | https://arxiv.org/abs/2404.03949 |