Yiling Song

Jan 24, 2024 | link.aps.org | Yang Liu |Chuang Jiang |Yiling Song |Xiaohong Li

Symmetry plays a key role in classifying topological phases, which can be enriched by the projective symmetry group in the presence of artificial gauge fields (AGFs). Here, we utilize two-dimensional (2D) photonic microring lattices to create three different topological states based on projective symmetry. By engineering link rings, we are able to flexibly manipulate the AGFs and coupling magnitude.