Configurable Hybrid Topological Meta-Polycrystal Photonic Circuitry (IMAGE)
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Figure 2. Observation of hybrid topological edge states and corner states in topological polycrystal circuits. (A) Schematic of the topological polycrystal photonic circuit. (B) Eigenvalue calculation results, with an inset showing the QL distribution. (C) Experimental transmission spectra measured when sources are excited at P1 and P2. (D) Eight hybrid topological edge states experimentally observed at the VPC and PPC interfaces. (E) Dual-band hybrid topological corner states experimentally observed when excited at P3 and P4.
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