Non-Hermitian topology and exceptional-point geometries
Non-Hermitian theory is a theoretical framework used to describe open systems. It offers a
powerful tool in the characterization of both the intrinsic degrees of freedom of a system and …
powerful tool in the characterization of both the intrinsic degrees of freedom of a system and …
Non-Hermitian topological magnonics
Dissipation in mechanics, optics, acoustics, and electronic circuits is nowadays recognized
to be not always detrimental but can be exploited to achieve non-Hermitian topological …
to be not always detrimental but can be exploited to achieve non-Hermitian topological …
Homotopy, symmetry, and non-Hermitian band topology
Non-Hermitian matrices are ubiquitous in the description of nature ranging from classical
dissipative systems, including optical, electrical, and mechanical metamaterials, to scattering …
dissipative systems, including optical, electrical, and mechanical metamaterials, to scattering …
Anti-parity-time symmetry in a Su-Schrieffer-Heeger sonic lattice
The Su-Schrieffer-Heeger (SSH) model is an important cornerstone in modern condensed-
matter topology, yet it is the simplest one-dimensional (1D) tight binding approach to dwell …
matter topology, yet it is the simplest one-dimensional (1D) tight binding approach to dwell …
Observation of perfectly-chiral exceptional point via bound state in the continuum
Chirality is one of the fundamentals of nature with strong ties to asymmetry. In wave physics,
it is conventionally characterized by asymmetric scattering of circularly polarized waves but …
it is conventionally characterized by asymmetric scattering of circularly polarized waves but …
Non-hermitian mott skin effect
We propose a novel type of skin effects in non-Hermitian quantum many-body systems that
we dub a “non-Hermitian Mott skin effect.” This phenomenon is induced by the interplay …
we dub a “non-Hermitian Mott skin effect.” This phenomenon is induced by the interplay …
Liouvillian skin effect in an exactly solvable model
The interplay between dissipation, topology, and sensitivity to boundary conditions has
recently attracted tremendous amounts of attention at the level of effective non-Hermitian …
recently attracted tremendous amounts of attention at the level of effective non-Hermitian …
Observation of exceptional points in thermal atomic ensembles
C Liang, Y Tang, AN Xu, YC Liu - Physical Review Letters, 2023 - APS
Exceptional points (EPs) in non-Hermitian systems have recently attracted wide interest and
spawned intriguing prospects for enhanced sensing. However, EPs have not yet been …
spawned intriguing prospects for enhanced sensing. However, EPs have not yet been …
Realizing exceptional points of any order in the presence of symmetry
Exceptional points (EPs) appear as degeneracies in the spectrum of non-Hermitian matrices
at which the eigenvectors coalesce. In general, an EP of order n may find room to emerge if …
at which the eigenvectors coalesce. In general, an EP of order n may find room to emerge if …
Experimental simulation of symmetry-protected higher-order exceptional points with single photons
Exceptional points (EPs) of non-Hermitian (NH) systems have recently attracted increasing
attention due to their rich phenomenology and intriguing applications. Compared to the …
attention due to their rich phenomenology and intriguing applications. Compared to the …