Topological non-Hermitian skin effect

R Lin, T Tai, L Li, CH Lee - Frontiers of Physics, 2023 - Springer
This article reviews recent developments in the non-Hermitian skin effect (NHSE),
particularly on its rich interplay with topology. The review starts off with a pedagogical …

A second wave of topological phenomena in photonics and acoustics

X Zhang, F Zangeneh-Nejad, ZG Chen, MH Lu… - Nature, 2023 - nature.com
Light and sound are the most ubiquitous forms of waves, associated with a variety of
phenomena and physical effects such as rainbows and echoes. Light and sound, both …

Observation of acoustic non-Hermitian Bloch braids and associated topological phase transitions

Q Zhang, Y Li, H Sun, X Liu, L Zhao, X Feng, X Fan… - Physical Review Letters, 2023 - APS
Topological features embedded in ancient braiding and knotting arts endow significant
impacts on our daily life and even cutting-edge science. Recently, fast growing efforts are …

Experimental observation of non-Abelian topological acoustic semimetals and their phase transitions

B Jiang, A Bouhon, ZK Lin, X Zhou, B Hou, F Li… - Nature Physics, 2021 - nature.com
Topological phases of matter connect mathematical principles to real materials, and may
shape future electronic and quantum technologies. So far, this discipline has mostly focused …

Topological phononic metamaterials

W Zhu, W Deng, Y Liu, J Lu, HX Wang… - Reports on Progress …, 2023 - iopscience.iop.org
The concept of topological energy bands and their manifestations have been demonstrated
in condensed matter systems as a fantastic paradigm toward unprecedented physical …

Homotopy, symmetry, and non-Hermitian band topology

K Yang, Z Li, JLK König, L Rødland… - Reports On Progress …, 2024 - iopscience.iop.org
Non-Hermitian matrices are ubiquitous in the description of nature ranging from classical
dissipative systems, including optical, electrical, and mechanical metamaterials, to scattering …

Experimental observation of non-Abelian topological charges and edge states

Q Guo, T Jiang, RY Zhang, L Zhang, ZQ Zhang, B Yang… - Nature, 2021 - nature.com
In the last few decades, topological phase,,,,,,,,,–has emerged as a new classification of
matter states beyond the Ginzburg–Landau symmetry-breaking paradigm. The underlying …

Floquet non-Abelian topological insulator and multifold bulk-edge correspondence

T Li, H Hu - Nature Communications, 2023 - nature.com
Topological phases characterized by non-Abelian charges are beyond the scope of the
paradigmatic tenfold way and have gained increasing attention recently. Here we …

Exceptional non-Abelian topology in multiband non-Hermitian systems

CX Guo, S Chen, K Ding, H Hu - Physical Review Letters, 2023 - APS
Defective spectral degeneracy, known as exceptional point (EP), lies at the heart of various
intriguing phenomena in optics, acoustics, and other nonconservative systems. Despite …

Topological Euler class as a dynamical observable in optical lattices

FN Ünal, A Bouhon, RJ Slager - Physical review letters, 2020 - APS
The last years have witnessed rapid progress in the topological characterization of out-of-
equilibrium systems. We report on robust signatures of a new type of topology—the Euler …