Exceptional-point-engineered phonon laser in a cavity magnomechanical system The exceptional point (EP) (the analog of the $\\mathcal{PT}$ -symmetric regime), emerging in the system and changing the properties of photons, ... T Wang,W Zhang,J Cao,... - IOP Publishing Ltd 被引量: 0发...
Physicists are always riveted in predicting how a physical system behaves as a function of time. We begin this review article by understanding various formalisms to study the dynamics of the systems. The once-accepted belief that the Hamiltonian had to be Hermitian to ensure real eigenvalues got ...
45Altmetric Metrics Abstract In recent years, notions drawn from non-Hermitian physics and parity–time (PT) symmetry have attracted considerable attention. In particular, the realization that the interplay between gain and loss can lead to entirely new and unexpected features has initiated an intense...
16(e). The corresponding fast Fourier transform (FFT) patterns in the insert show the six-fold rotational symmetric pattern which also suggests hexagonal structure of the as-grown PtSe2 sample. The thickness of this PtSe2 sample is 4 layers (4L), which can be clearly distinguished from the...
The softening of phonon mode derives from the coalescence of the AB mode and its hole partner [see Fig. 3c, d]. In contrast to the mere merging of eigenmodes in single-particle [Math Processing Error]PT-symmetric systems, the particle and hole modes annihilate each other at the critical ...
Exceptional-point-engineered phonon laser in a cavity magnomechanical system The exceptional point (EP) (the analog of the $\\mathcal{PT}$ -symmetric regime), emerging in the system and changing the properties of photons, ... T Wang,W Zhang,J Cao,... - IOP Publishing Ltd 被引量: 0发...
Our work sheds new light on manipulating laser propagation with optomechanical EP devices and, in a broader view, can be extended to explore a wide range of $\mathcal{APT}$-symmetric effects, such as $\mathcal{APT}$-symmetric phonon lasers, $\mathcal{APT}$-symmetric topological effects, ...
symmetric systems using an optical setup. In the symmetry unbroken regime, we observe different periodic oscillations of coherence. Particularly, we observe two complete coherence backflows in one period in thePT-symmetric system, while only one backflow in theAPT-symmetric system. Moreover, in the...
Within the mean-field theory approach and neglecting local dispersion it was shown that the Hamiltonian of the couple may become PT -symmetric if injection of the polaritons at one site is equal to the decay at the other one. While this system has some formal similarity with the polariton ...
The XRD patterns of neat LDH, and the as synthesized LDH/rGO are shown inFig. 2(a). Neat LDH exhibited a hexagonal structure with sharp symmetric peaks for the (003), (006) and (009) planes and broad asymmetric peaks for (015) and (018) planes which are characteristic of hydrotalcite...