Magnetically Tailored Hybrid Topological Vortices for Arbitrary Spinful Photonic Circuits

ABSTRACT Intimate merging of photonic degrees of freedom and topology offers a robust strategy for manipulating light and enables numerous intriguing phenomena. Flexible topological control in practice favors altering constitutive properties of photonic materials under fixed arrangements, greatly limiting the produced topological diversity. This work provides a paradigm for constructing arbitrary pattern spinful circuits with magnetic‐controlled hybrid topological vortices, supporting spin‐dependent photonic effects in multidimensions. Arrangable photonic resonators driven by unidirectional gyromagnetic interface excitations host vortices with arbitrary spins and orbitals, generating real‐ and momentum‐space topological duality. Through tailored magnetic field patterns, a single device allows for topological transport that freely converts vortices and higher‐order topological modes featuring arbitrary vortices. Further imposing bias on a preset pattern induces dynamic switching of operating bandwidths and spinful topological phase transitions. Our findings embodying the versatility of guiding and emitting not only lay the foundation for spinful topological physics but also open new avenues for compact and integrated applications in computing and communications.