Advances and applications on non-Hermitian topological photonics

Q Yan, B Zhao, R Zhou, R Ma, Q Lyu, S Chu, X Hu… - …, 2023 - degruyter.com
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 …

Electrical circuit realization of topological switching for the non-Hermitian skin effect

H Zhang, T Chen, L Li, CH Lee, X Zhang - Physical Review B, 2023 - APS
Non-Hermitian systems reveal rich physics beyond the Hermitian regime, and have aroused
great interest. One remarkable physical phenomenon is the non-Hermitian skin effect …

Hybrid skin-topological modes without asymmetric couplings

W Zhu, J Gong - Physical Review B, 2022 - APS
The non-Hermitian skin effect (NHSE) in non-Hermitian lattice systems, associated with a
point gap on the complex energy plane, has attracted great theoretical and experimental …

Homotopy characterization of non-Hermitian Hamiltonians

CC Wojcik, XQ Sun, T Bzdušek, S Fan - Physical Review B, 2020 - APS
We revisit the problem of classifying topological band structures in non-Hermitian systems.
Recently, a solution has been proposed, which is based on redefining the notion of energy …

Non-Bloch bands in two-dimensional non-Hermitian systems

K Yokomizo, S Murakami - Physical Review B, 2023 - APS
The non-Bloch band theory can describe energy bands in a one-dimensional (1D) non-
Hermitian system. On the other hand, whether the non-Bloch band theory can be extended …

Photonic corner skin modes in non-Hermitian photonic crystals

W Zhu, J Gong - Physical Review B, 2023 - APS
Useful in the enhancement of light-matter interaction, localization of light is at the heart of
photonics studies. Different approaches have been proposed to localize light, including …

Non-Hermitian topological Mott insulators in one-dimensional fermionic superlattices

T Liu, JJ He, T Yoshida, ZL **ang, F Nori - Physical Review B, 2020 - APS
We study interaction-induced Mott insulators, and their topological properties in a one-
dimensional non-Hermitian strongly correlated spinful fermionic superlattice system with …

Non-Hermitian higher-order Dirac semimetals

SAA Ghorashi, T Li, M Sato, TL Hughes - Physical Review B, 2021 - APS
In this Letter, we study three-dimensional non-Hermitian higher-order Dirac semimetals
(NHHODSMs). Our focus is on C 4-symmetric non-Hermitian systems where we investigate …

Large-area quantum-spin-Hall waveguide states in a three-layer topological photonic crystal heterostructure

Z Lan, MLN Chen, JW You, WEI Sha - Physical Review A, 2023 - APS
Topological photonic edge states are conventionally formed at the interface between two
domains of topologically trivial and nontrivial photonic crystals. Recent works exploiting …

Exceptional non-Hermitian topological edge mode and its application to active matter

K Sone, Y Ashida, T Sagawa - Nature communications, 2020 - nature.com
Topological materials exhibit edge-localized scattering-free modes protected by their
nontrivial bulk topology through the bulk-edge correspondence in Hermitian systems. While …