44 citations · 102 across the 9 of their papers we have counts for
9 papers
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…
Observation of fourfold Dirac nodal line semimetal and its unconventional surface responses in sonic crystals
Chang-Yin Ji, Xiao-Ping Li, Zheng Tang +5
Three-dimensional nodal line semimetals (NLSMs) provide remarkable importance for both enrich topological physics and wave management. However, NLSMs realized in acoustic systems a…
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…
Resonant Electric Probe to Axionic Dark Matter
Junxi Duan, Yu Gao, Chang-Yin Ji +3
The oscillating light axion field is known as wave dark matter. We propose an LC-resonance enhanced detection of the narrow band electric signals induced by the axion dark matter u…
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…