Experimental photonic waveguide array on Sierpiński-gasket fractal lattice supports robust corner states induced by geometry alone, mapped to effective breathing Kagome model with C3 topology.
Possible Realization of Directional Optical Waveguides in Photonic Crystals with Broken Time-Reversal Symmetry
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Demonstrates 2D topological phases and propagating edge states in space-time photonic crystals, including an exponentially growing edge state along the space-time interface.
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Fractality-induced photonic topological insulators
Experimental photonic waveguide array on Sierpiński-gasket fractal lattice supports robust corner states induced by geometry alone, mapped to effective breathing Kagome model with C3 topology.
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2D Topological Edge States in Periodic Space-Time Interfaces
Demonstrates 2D topological phases and propagating edge states in space-time photonic crystals, including an exponentially growing edge state along the space-time interface.