Peixiang Lu

Apr 24, 2023 | opg.optica.org | Xiaohong Li |Peixiang Lu |Yiling Song |Shaolin Ke

AbstractThe gauge fields dramatically alter the algebraic structure of spatial symmetries and make them projectively represented, giving rise to novel topological phases. Here, we propose a photonic Möbius topological insulator enabled by projective translation symmetry in multiorbital waveguide arrays, where the artificial π gauge flux is aroused by the inter-orbital coupling between the first (s) and third (d) order modes.