4 papers · 1 filter
Quadratic Band Touching and Nontrivial Winding Reveal Generalized Angular Momentum Conservation
Yihan Wang, Domenico Bongiovanni, Dario Jukić +7
Angular momentum conservation stands as one of the most fundamental and robust laws of physics. In discrete lattices, however, its realization can deviate markedly from the continu…
Optical Vortex Ladder via Sisyphus Pumping of Pseudospin
Sihong Lei, Shiqi Xia, Daohong Song +3
Robust higher-order optical vortices are much in demand for applications in optical manipulation, optical communications, quantum entanglement and quantum computing. However, in nu…
Deep learning empowered synthetic dimension dynamics: morphing of light into topological modes
Shiqi Xia, Sihong Lei, Daohong Song +7
Synthetic dimensions (SDs) opened the door for exploring previously inaccessible phenomena in high-dimensional synthetic space. However, construction of synthetic lattices with des…
Mapping and manipulation of topological singularities: from photonic graphene to T-graphene
Sihong Lei, Shiqi Xia, Junqian Wang +6
Topological singularities (TSs) in momentum space give rise to intriguing fundamental phenomena as well as unusual material properties, attracting a great deal of interest in the p…