Fragility in Topological Photonics
Abstract
Topological photonics promises to deliver superior devices are that robust against disorders and fabrication imperfections. However, the conventional wisdom of topological robustness fails to hold in practical applications. There are many different types of disorders arising in reality, and for many of which whether they defy topological protection and their severity in device performance are not well understood. For example, some of these structures are intrinsically non-Hermitian while Hermitian topological indices have been assumed. In this project, we will carry out a systematic study of different types of disorder in topological photonic structures and understand if and why they escape topological protection. We will also examine the non-Hermitian nature of such structures and explore new perspectives of robustness from non-Hermitian topology. Based on these studies, we will put forward truly fault-tolerant structures for real-world applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 16, 2024
- Source ID
- FA23862314051
Entities
People
- Alex Y Song
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Sydney