Title

Observation of Robust Zero Energy Extended States

Authors

J. Ferdous, The University of Texas Rio Grande Valley
Cem Yuce
Andrea Alu
Hamidreza Ramezani, The University of Texas Rio Grande ValleyFollow

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.

Comments

© 2023 American Physical Society

Original published version available at https://doi.org/10.1103/PhysRevApplied.19.L061002

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