Observation of parity-time symmetry for evanescent waves
Parity-time (PT) symmetry has enabled the demonstration of fascinating wave phenomena in
non-Hermitian systems characterized by precisely balanced gain and loss. Until now, the …
non-Hermitian systems characterized by precisely balanced gain and loss. Until now, the …
Higher-order Skin Effect through a Hermitian-non-Hermitian Correspondence and Its Observation in an Acoustic Kagome Lattice
The non-Hermitian skin effect (NHSE) is a distinctive topological phenomenon observed in
nonHermitian systems. Recently, there has been considerable interest in exploring higher …
nonHermitian systems. Recently, there has been considerable interest in exploring higher …
Efficient evolution framework for chirality control in non-Hermitian systems with adiabaticity engineering
The eigenvalue of a non-Hermitian Hamiltonian often forms a self-intersecting Riemann
surface, leading to a unique mode conversion phenomenon when the Hamiltonian evolves …
surface, leading to a unique mode conversion phenomenon when the Hamiltonian evolves …
Acoustic logic networks realized with non-Hermitian and nonlocal metagratings
H Xiao, C Zhang, Y Li, D Ta, X Jiang - Physical Review Applied, 2024 - APS
This paper proposes the concept and demonstrates the realization of acoustic logic
networks (ALNs), a system that performs various logic operations using sound waves. Unlike …
networks (ALNs), a system that performs various logic operations using sound waves. Unlike …
An acoustic metamaterial with space-time modulated density
X Zhu, C Shen - The Journal of the Acoustical Society of America, 2024 - pubs.aip.org
Space-time modulation opens the door for unprecedented wave behavior control, such as
nonreciprocal wave manipulation. Here is proposed a one-dimensional space-time …
nonreciprocal wave manipulation. Here is proposed a one-dimensional space-time …
Active acoustic metamaterials
X Wang, G Ma - Chinese Physics Letters, 2024 - iopscience.iop.org
Active acoustic metamaterials Page 1 Chinese Physics Letters ACCEPTED MANUSCRIPT
Active acoustic metamaterials To cite this article before publication: Xulong Wang et al 2024 …
Active acoustic metamaterials To cite this article before publication: Xulong Wang et al 2024 …
Broad-angle coherent perfect absorption-lasing and collimation in two-dimensional non-Hermitian phononic crystals
L Kong, MH Eldegail, C Xu - Europhysics Letters, 2024 - iopscience.iop.org
Coherent perfect absorption-lasing and collimation have been extensively studied primarily
for normal incidence, leaving broad-angle scenarios relatively unexplored. In this work, we …
for normal incidence, leaving broad-angle scenarios relatively unexplored. In this work, we …
Direct measurement of topological invariants through temporal adiabatic evolution of bulk states in the synthetic Brillouin zone
Mathematically, topological invariants arise from the parallel transport of eigenstates on the
energy bands, which, in physics, correspond to the adiabatic dynamical evolution of …
energy bands, which, in physics, correspond to the adiabatic dynamical evolution of …
[PDF][PDF] Active acoustic metamaterials
W Xulong, M Guancong - Chin. Phys. Lett. - cpl.iphy.ac.cn
The history of acoustic metamaterials can be traced back to the turn of the 21st century,
when local resonances of subwavelength structures were leveraged for acoustic properties …
when local resonances of subwavelength structures were leveraged for acoustic properties …