[HTML][HTML] 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 …

Non-hermitian physics

Y Ashida, Z Gong, M Ueda - Advances in Physics, 2020 - Taylor & Francis
A review is given on the foundations and applications of non-Hermitian classical and
quantum physics. First, key theorems and central concepts in non-Hermitian linear algebra …

Topological origin of non-Hermitian skin effects

N Okuma, K Kawabata, K Shiozaki, M Sato - Physical review letters, 2020 - APS
A unique feature of non-Hermitian systems is the skin effect, which is the extreme sensitivity
to the boundary conditions. Here, we reveal that the skin effect originates from intrinsic non …

Correspondence between winding numbers and skin modes in non-Hermitian systems

K Zhang, Z Yang, C Fang - Physical Review Letters, 2020 - APS
We establish exact relations between the winding of “energy”(eigenvalue of Hamiltonian) on
the complex plane as momentum traverses the Brillouin zone with periodic boundary …

Non-Hermitian bulk-boundary correspondence and auxiliary generalized Brillouin zone theory

Z Yang, K Zhang, C Fang, J Hu - Physical Review Letters, 2020 - APS
We provide a systematic and self-consistent method to calculate the generalized Brillouin
zone (GBZ) analytically in one-dimensional non-Hermitian systems, which helps us to …

[HTML][HTML] Critical non-Hermitian skin effect

L Li, CH Lee, S Mu, J Gong - Nature communications, 2020 - nature.com
Critical systems represent physical boundaries between different phases of matter and have
been intensely studied for their universality and rich physics. Yet, with the rise of non …

Topological switch for non-Hermitian skin effect in cold-atom systems with loss

L Li, CH Lee, J Gong - Physical review letters, 2020 - APS
We propose a realistic cold-atom quantum setting where topological localization induces
nonreciprocal pumping. This is an intriguing non-Hermitian phenomenon that illustrates how …

Non-Hermitian skin modes induced by on-site dissipations and chiral tunneling effect

Y Yi, Z Yang - Physical Review Letters, 2020 - APS
In this Letter, we study the conditions under which on-site dissipations can induce non-
Hermitian skin modes in non-Hermitian systems. When the original Hermitian Hamiltonian …

[HTML][HTML] 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 …

Knots and non-Hermitian Bloch bands

H Hu, E Zhao - Physical Review Letters, 2021 - APS
Knots have a twisted history in quantum physics. They were abandoned as failed models of
atoms. Only much later was the connection between knot invariants and Wilson loops in …