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 …

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 …

Hermitian and non-Hermitian topology from photon-mediated interactions

F Roccati, M Bello, Z Gong, M Ueda… - Nature …, 2024 - nature.com
As light can mediate interactions between atoms in a photonic environment, engineering it
for endowing the photon-mediated Hamiltonian with desired features, like robustness …

Giant emitters in a structured bath with non-Hermitian skin effect

L Du, L Guo, Y Zhang, AF Kockum - Physical Review Research, 2023 - APS
Giant emitters derive their name from nonlocal field-emitter interactions and feature diverse
self-interference effects. Authors of most of the existing works on giant emitters have …

Bound states and photon emission in non-Hermitian nanophotonics

Z Gong, M Bello, D Malz, FK Kunst - Physical Review A, 2022 - APS
We establish a general framework for studying the bound states and the photon-emission
dynamics of quantum emitters coupled to structured nanophotonic lattices with engineered …

Fractional quantum Zeno effect emerging from non-Hermitian physics

Y Sun, T Shi, Z Liu, Z Zhang, L **ao, S Jia, Y Hu - Physical Review X, 2023 - APS
Exploring non-Hermitian phenomenology is an exciting frontier of modern physics. However,
the demonstration of a non-Hermitian phenomenon that is quantum in nature has remained …

Quantum metric unveils defect freezing in non-Hermitian systems

K Sim, N Defenu, P Molignini, R Chitra - Physical Review Letters, 2023 - APS
Non-Hermiticity in quantum Hamiltonians leads to nonunitary time evolution and possibly
complex energy eigenvalues, which can lead to a rich phenomenology with no Hermitian …

Exotic quantum light-matter interactions in bilayer square lattices

XL Dong, PB Li, JQ Chen, FL Li, F Nori - Physical Review B, 2023 - APS
We investigate quantum emitters (QEs) interacting with a photonic structured bath made of
bilayer square lattices, where the resonance anticrossing between the energy bands opens …

Infernal and exceptional edge modes: non-Hermitian topology beyond the skin effect

MM Denner, T Neupert, F Schindler - Journal of Physics …, 2023 - iopscience.iop.org
The classification of point gap topology in all local non-Hermitian (NH) symmetry classes
has been recently established. However, many entries in the resulting periodic table have …

Topological effects in two-dimensional quantum emitter systems

M Bello, JI Cirac - Physical Review B, 2023 - APS
In this work, we show how novel topological effects appear when considering arrangements
of increasing complexity of quantum emitters coupled to two-dimensional bosonic …