Orbital-Angular-Momentum-Controlled Hybrid Nanowire Circuit

Plasmonic nanostructures can enable compact multiplexing of the orbital angular momentum (OAM) light; however, strong dissipation highly localized OAM-distinct plasmonic fields in near-field region hinders on-chip OAM transmission and processing. Superior efficiency is offered by semiconductor nanowires sustaining confined optical modes, but only polarization degree freedom has been utilized for their selective excitation. Here we demonstrate that incident beams selectively excite single-crystalline cadmium sulfide (CdS) through coupling into nanowire waveguides long-distance transportation. This allows us to build an OAM-controlled hybrid circuit logic operations including AND OR gates. In addition, this enables photoluminescence readout OAM-encrypted information. Our results open exciting new avenues not photonics develop switches, gates, modulators also ultracompact photonic circuits information