Experimental Realization of Topological Braiding Protected by Non-Abelian Quaternion Invariants in Acoustic Systems

The results in Figure 2 can be directly reproduced by calculating the band structure and winding number using standard methods reported in the literature, based on the parameters provided in the manuscript. The results in Figure 3 were mainly reproduced using COMSOL Multiphysics. The corresponding model file is: Three cavity_hopping-three different cavity-identical hopping - 20240713.mph Part of the raw data, together with the fitting codes used to reproduce Figure 4, can be found in: Three_cavities_2.m eigenvector.m Acoustic Raw data.zip