Parity–time reversal symmetry (PT symmetry) in non-Hermitian systems realizes spontaneous symmetry breaking, thereby leading to counterintuitive phenomena. A coupled system with antisymmetric gain/loss profiles
Topological phases of non-Hermitian systems. Phys. Rev. X 8, 031079 (2018). CAS Google Scholar Martinez Alvarez, V. M., Barrios Vargas, J. E. & Foa Torres, L. E. F. Non-Hermitian robust edge states in one dimension: anomalous localization and eigenspace condensation at exceptional ...
reports OPEN Dynamic protected states in the non‑Hermitian system Lei Chen 1,2, Zhen‑Xia Niu 3 & Xingran Xu 4* The non-Hermitian skin effect and nonreciprocal behavior are sensitive to the boundary conditions, which are unique features of non-Hermitian systems. ...
Non-Hermitian systems exhibit striking exceptions from the paradigmatic bulk-boundary correspondence, including the failure of bulk Bloch band invariants in predicting boundary states and the (dis)appearance of boundary states at parameter values far from those corresponding to gap closings in periodic sys...
The study of entanglement in the symmetry sectors of a theory has recently attracted a lot of attention since it provides better understanding of some aspects of quantum many-body systems. In this paper, we extend this analysis to the case of non-Hermitian models, in which the reduced density...
Non-Hermitian systems and optical trapping in vacuum or air (which are underdamped) hold significant and growing importance29–31,58,59,61,62. We use stochastic calculus to solve the Langevin stochastic dif- ferential equation with nonconservative trapping forces and thereby generalize the ET to ...
题目:Quantum Non-Hermitian Phenomena with Open Baths | 北京大学量子材料科学中心 时间:2024-04-17 15:00 报告人:胡颖 山西大学 主办方:北京大学量子材料科学中心 直播链接:蔻享学术摘要:While enchanting non-Hermitian properties unattainable in Hermitian systems are widely revealed, genuine quantum non-Hermitia...
Here, we provide an overview of recent advances in the area of acoustic resonances in non-Hermitian open systems, including Helmholtz resonators, metamaterials and metasurfaces, and discuss their applications in various acoustic devices, including sound absorbers, acoustic sources, vortex beam generation...
Here, we study the Anderson localization behaviors of electromagnetic waves in such gain-loss balanced random non-Hermitian systems when the waves are obliquely incident on the random media. We also study the case of normal incidence when the sample-specific gain-loss profile is slightly altered ...
Here, we reveal that in non-Hermitian systems robust gapless edge modes can ubiquitously appear owing to an alternative mechanism that cannot be predicted from bulk topology. The robustness of these edge modes originates from yet another topological structure accompanying the branchpoint singularity ...