Acoustic waveguides have been used to implement the long-theorized phenomenon of non-Abelian braiding, in which abstract geometric constructions are used to generate transformations between different modes.
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Chong, Y. Making weaves. Nat. Phys. 18, 133–134 (2022). https://doi.org/10.1038/s41567-021-01477-9
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DOI: https://doi.org/10.1038/s41567-021-01477-9
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