Fig. 1. Schematics of electronic models. (a) Dirac model; (b) Haldane model; (c) modified Haldane model; (d) heterogeneous Haldane model

Fig. 2. Schematic diagrams of magnetic photonic crystals (MPC). (a) Uniformly magnetized MPC; (b) cross-magnetized MPC; (c) heterogeneously magnetized MPC (yellow rectangle inside is a metal obstacle)

Fig. 3. Realization of antichiral states in 2D and 3D system. (a) Experimental design of a unit cell in 2D system^[13]; (b) (c) experimental sample for measuring antichiral edge states and the measurement results^[86,90]; (d) simulation and experimental results of one-way bulk states^[93]; (e) experimental design of 3D antichiral surface states and the experimental result of project band^[87]

Fig. 4. Application of antichiral states. (a) Compact three-channel one-way waveguide^[13]; (b) topological unidirectional circulator^[86]; (c) reconfigurable topological beam splitting^[90]; (d) reconfigurable light imaging^[101]