Document Type
Article
Publication Date
5-18-2023
Abstract
Topological edge states arise at the interface of two topologically distinct structures and have two distinct features: they are localized and robust against symmetry protecting disorder. On the other hand, conventional transport in one dimension is associated with extended states, which typically do not have topological robustness. In this letter, using lossy coupled resonators in one dimension, we demonstrate both theoretically and experimentally the existence of robust states residing in the bulk. We show that they are unusually robust against disorders in coupling between adjacent sites and losses. Our work paves the way to a different form of robust transport that is not limited to boundary phenomena and can be accessed more easily from the far field.
Recommended Citation
Ferdous, Jannatul, et al. "Observation of Robust Zero-Energy Extended States." Physical Review Applied 19.6 (2023): L061002. https://doi.org/10.1103/PhysRevApplied.19.L061002
Publication Title
Physical Review Applied
DOI
https://doi.org/10.1103/PhysRevApplied.19.L061002
Comments
© 2023 American Physical Society
Original published version available at https://doi.org/10.1103/PhysRevApplied.19.L061002