Here we construct a topological gallery insulator using sonic crystals made of thermoplastic rods that are decorated with carbon nanotube films, which act as a sonic gain medium by virtue of electro-thermoacoustic coupling. By engineering specific non-Hermiticity textures to the activated rods, we ...
Special attentions are given to exceptional points - branch-point singularities on the complex eigenvalue manifolds that exhibit non-trivial topological properties. We also discuss recent developments in non-Hermitian band topology, such as the non-Hermitian skin effect and non-Hermitian topological ...
Exceptional points are branch singularities on non-Hermitian eigenvalue manifolds and exhibit exotic topological phenomena associated with the winding of eigenvalues and eigenvectors. The confluence of non-Hermiticity and band topology generates new phenomena such as the non-Hermitian skin effect, which is...
Non-Hermitian physics in photonics, plasmonics, and metamaterials Non-Hermitian topological photonics in both linear and nonlinear regimes Non-Hermitian quantum systems Exceptional points in optical and photonic systems and applications Wave propagation in...
Non-Hermitian topological light steering. Science 365, 1163–1166 (2019). Article ADS MATH Google Scholar Liao, K. et al. On-chip integrated exceptional surface microlaser. Sci. Adv. 9, eadf3470 (2023). Article MATH Google Scholar El-Ganainy, R., Makris, K. G., Christodoulides, D...
The main novelties of the paper are the proposition of a new elastic platform with feedback control for the study of non-Hermitian topological systems, a comprehensive analysis of combined effects of non-Hermiticity and disorders on topological properties, and the extension of 1D to 2D structures....
non‐Hermitian topological phase transitionsThe topological properties of a generalized non〩ermitian Su–Schrieffer–Heeger model are investigated and it is demonstrated that the non〩ermitian phase transition and the non〩ermitian skin effect can be induced by intraヽell asymmetric coupling under open...
PHYSICAL REVIEW RESEARCH 4, 013195 (2022)Nonlinear non-Hermitian higher-order topological laserMotohiko EzawaDepartment of Applied Physics, University of Tokyo, Hongo 7-3-1, 113-8656, Japan(Received 10 December 2021; accepted 16 February 2022; published 11 March 2022)Topological lasers are investigat...
题目:Impart orientations to topological line defects --- from non-Abelian and non-Hermitian band nodes to optical polarization singularities | 复旦理论物理报告会 报告人:张若洋 助理教授 香港科技大…
Non-Hermitian photonics and topological photonics, as new research fields in optics, have attracted much attention in recent years, accompanying by a great deal of new physical concepts and novel effects emerging. The two fields are gradually crossed during the development process and the non-Hermit...