Interacting topological bosonic systems exhibit fundamentally distinct behaviour to their fermionic counterparts. We report the first topological parametric oscillators based on a Dirac-vortex nano-electro-mechanical cavity.
Vortex strings are hypothetical topological defects in the geometry of spacetime in cosmology. We report the first experimental observations of vortex string chiral modes using a meta-material system.
Xiang Xi*; Jingwen Ma*; Shuai Wan; Chun-Hua Dong; Xiankai Sun†.
Science Advances, 7, 2, eabe1398 (2021) [This work is featured in Phys.org and StatNano]
Zejie Yu; Xiang Xi; Jingwen Ma; Hon Ki Tsang; Chang-Ling Zou; Xiankai Sun†.
Optica, 6, 10, 1342–1348 (2019)
2016
We propose a new design of on-chip isolator using photonic spin-orbit interaction. This work is featured as cover article and selected by Optics & Photonics News (OPN), The optical Society's monthly news magazine, as one of the world's 30 most clearly communicated breakthroughs in optics in 2016.