Fractal photonic anomalous Floquet topological insulators to generate multiple quantum chiral edge states

https://phys.org/news/2023-12-fractal-photonic-anomalous-floquet-topological.html

"first fractal photonic AFTIs in glass using FLDW technique... specially designed 3D waveguides based on DCs... up to 88 DCs in 1-period fractal AFTI samples, but fewer in complete lattice... 48 chiral edge modes carried by single lattice... multiple propagating single-photon chiral edge states indistinguishable, generating topologically protected entanglement resources and performing quantum logic operations... stable, scalable multi-photon topological quantum -computation and -aimulation of multi-particle systems"

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Physicists demonstrate parity anomaly in a topological insulator
https://phys.org/news/2024-03-physicists-parity-anomaly-topological-insulator.htm