44 citations · 102 across the 9 of their papers we have counts for
7 papers · 1 filter
Maximal Axion Optical Chirality Enabled by Degenerate Quasibound States in the Continuum
Chang-Yin Ji, Chong Wang, Jiafang Li +1
Axion quasiparticles introduce magnetoelectric coupling in topological materials, yet their optical signatures are intrinsically weak, severely limiting experimental detection and…
Topologically Configurable Nonlinear Vortex Generation at van der Waals Heterostructures
Hongwei Wang, Yuda Wan, Kai Wang +8
van der Waals (vdW) materials offer a highly tunable and efficient platform at nanoscale for nonlinear and quantum optics. Twist-stacked vdW heterostructures enable elegant control…
Visualization of Photonic Band Structures via Far-field Measurements in SiNx Photonic Crystal Slabs
Wenze Lan, Peng Fu, Chang-Yin Ji +4
The band structures of the photonic crystal slabs play a significant role in manipulating the flow of light and pre-dicting exotic physics in photonics. In this letter, we show tha…
Probing Phase Transition of Band Topology via Radiation Topology
Chang-Yin Ji, Wenze Lan, Peng Fu +5
Topological photonics has received extensive attention from researchers because it provides brand new physical principles to manipulate light. Band topology of optical materials is…
Exceptional points in a topological photonic system
Junhua Dong, Chang-Yin Ji, Qingmei Hu +2
Exceptional points as branch singularities describe peculiar degeneracies of non-Hermitian systems that do not obey energy conservation. This work shows that exceptional points can…
Topologically protected Fano resonance in photonic valley Hall insulators
Chang-Yin Ji, Yongyou Zhang, Bingsuo Zou +1
Rapidly developing photonics brings many interesting resonant optical phenomena, in which the Fano resonance (FR) always intrigues researchers because of its applications in optica…
Transport tuning of photonic topological edge states by optical cavities
Chang-Yin Ji, Gui-Bin Liu, Yongyou Zhang +2
Crystal-symmetry-protected photonic topological edge states (PTESs) based on air rods in conventional dielectric materials are designed as photonic topological waveguides (PTWs) co…