Practical realization of chiral nonlinearity for strong topological protection
| Title: | Practical realization of chiral nonlinearity for strong topological protection |
|---|---|
| Authors: | Guo, Xinxin, Jezequel, Lucien, Padlewski, Mathieu, Lissek, Hervé, Delplace, Pierre, Fleury, Romain |
| Publication Year: | 2024 |
| Collection: | Condensed Matter Nonlinear Sciences |
| Subject Terms: | Condensed Matter - Mesoscale and Nanoscale Physics, Nonlinear Sciences - Pattern Formation and Solitons |
| More Details: | Nonlinear topology has been much less inquired compared to its linear counterpart. Existing advances have focused on nonlinearities of limited magnitudes and fairly homogeneous types. As such, the realizations have rarely been concerned with the requirements for nonlinearity. Here we explore nonlinear topological protection by determining nonlinear rules and demonstrate their relevance in real-world experiments. We take advantage of chiral symmetry and identify the condition for its continuation in general nonlinear environments. Applying it to one-dimensional topological lattices, we show possible evolution paths for zero-energy edge states that preserve topologically nontrivial phases regardless of the specifics of the chiral nonlinearities. Based on an acoustic prototype design with non-local nonlinearities, we theoretically, numerically, and experimentally implement the nonlinear topological edge states that persist in all nonlinear degrees and directions without any frequency shift. Our findings unveil a broad family of nonlinearities compatible with topological non-triviality, establishing a solid ground for future drilling in the emergent field of nonlinear topology. |
| Document Type: | Working Paper |
| Access URL: | http://arxiv.org/abs/2403.10590 |
| Accession Number: | edsarx.2403.10590 |
| Database: | arXiv |
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| RecordInfo | BibRecord: BibEntity: Subjects: – SubjectFull: Condensed Matter - Mesoscale and Nanoscale Physics Type: general – SubjectFull: Nonlinear Sciences - Pattern Formation and Solitons Type: general Titles: – TitleFull: Practical realization of chiral nonlinearity for strong topological protection Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Guo, Xinxin – PersonEntity: Name: NameFull: Jezequel, Lucien – PersonEntity: Name: NameFull: Padlewski, Mathieu – PersonEntity: Name: NameFull: Lissek, Hervé – PersonEntity: Name: NameFull: Delplace, Pierre – PersonEntity: Name: NameFull: Fleury, Romain IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 03 Type: published Y: 2024 |
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