556 citations · 4k across the 49 of their papers we have counts for
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Valley-dependent wavepacket self-rotation and Zitterbewegung in symmetry-broken honeycomb lattices
Xiuying Liu, Frane Lunić, Daohong Song +6
The toolbox quantities used for manipulating the flow of light include typically amplitude, phase, and polarization. Pseudospins, such as those arising from valley degrees of freed…
Weakly nonlinear topological gap solitons in Su-Schrieffer-Heeger photonic lattices
Min Guo, Shiqi Xia, Nan Wang +3
We study both theoretically and experimentally the effect of nonlinearity on topologically protected linear interface modes in a photonic Su-Schrieffer-Heeger (SSH) lattice. It is…
Nonlinear control of PT-symmetry and non-Hermitian topological states
Shiqi Xia, Dimitrios Kaltsas, Daohong Song +6
Advances in topological photonics and non-Hermitian optics have drastically changed our perception on how interdisciplinary concepts may empower unprecedented applications. Bridgin…
Nonlinear Topological Valley Hall Edge States Arising from Type-II Dirac Cones
Hua Zhong, Shiqi Xia, Yongdong Li +4
Type-II Dirac/Weyl points, although impermissible in particle physics due to Lorentz covariance, were uncovered in condensed matter physics, driven by fundamental interest and intr…
Nontrivial coupling of light into a defect: the interplay of nonlinearity and topology
Shiqi Xia, Dario Jukić, Nan Wang +9
The flourishing of topological photonics in the last decade was achieved mainly due to developments in linear topological photonic structures. However, when nonlinearity is introdu…
Nonlinear guiding of light in tunable food-dye solutions
Guo Liang, Sojin Han, Xubo Hu +6
We provide the first demonstration of nonlinear self-trapping of light in solutions of food coloring dyes, leading to dirt cheap soliton waveguides. The optical self-focusing nonli…