Photonic Spin-Hall Logic Devices Based on Programmable Spoof Plasmonic Metamaterial

The entanglement of the momentum of light with its spin at interfaces or inside structured media, known as the photonic spin-Hall effect, holds great promise for various applications, such as beam splitting, focusing, and polarization detection. However, the photonic spin-Hall effect remains unexplored in the field of logic operation. In this work, the photonic spin-Hall effect of spoof surface plasmon polaritons (SSPPs) in programmable metamaterial is demonstrated. Moreover, photonic spin-Hall logic devices based on programmable spoof plasmonic metamaterial are designed, enabling the control of energy flow through the utilization of both spin and digital coding, with examples including SSPPs logic gates such as the "AND" gate, the "NIMPLY" gate (A AND NOT B), the "OR" gate, and the "NOT" gate. The findings introduce the combination of digital coding metamaterial with the photonic spin Hall effect, which offers a powerful and flexible platform for controlling electromagnetic waves in information processing. Photonic spin-Hall logic devices based on programmable spoof plasmonic metamaterial are reported. The logic rule between "spin" and "coding sequence" determines the propagation behavior of EM waves. "AND," "NIMPLY," "OR," and "NOT" gates have been numerically and experimentally demonstrated. The work offers a powerful and flexible platform for controlling electromagnetic (EM) waves and designing novel logic devices. image