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 …
The topological properties of an object, associated with an integer called the topological invariant, are global features that cannot change continuously but only through abrupt …
Non-Hermiticity significantly enriches the properties of topological models, leading to exotic features such as the non-Hermitian skin effects and non-Bloch bulk-boundary …
A unique feature of non-Hermitian (NH) systems is the NH skin effect, ie, the edge localization of an extensive number of bulk-band eigenstates in a lattice with open or semi …
T Dai, Y Ao, J Mao, Y Yang, Y Zheng, C Zhai, Y Li… - Nature Physics, 2024 - nature.com
Manipulating topological invariants is possible by modifying the global properties of optical devices to alter their band structures. This could be achieved by statically altering devices or …
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 …
Q Lin, W Yi, P Xue - Nature Communications, 2023 - nature.com
Matter transport is a fundamental process in nature. Understanding and manipulating flow in a synthetic media often have rich implications for modern device design. Here we …
Single-mode operation is a desirable but elusive property for lasers operating at high pump powers. Typically, single-mode lasing is attainable close to threshold, but increasing the …
CM Bender, S Boettcher, PN Meisinger - Journal of Mathematical …, 1999 - pubs.aip.org
This paper proposes to broaden the canonical formulation of quantum mechanics. Ordinarily, one imposes the condition H†= H on the Hamiltonian, where† represents the …