Topologically robust programmable logic arrays using light and matter skyrmions

TL;DR

This paper introduces a modular, topologically robust optical logic architecture using skyrmions, demonstrating its potential for scalable, noise-resistant photonic computing systems.

Contribution

It presents a system-level architecture for skyrmion-based optical logic with a library of primitives, validated through experiments showing robustness and accurate charge readout.

Findings

Successful experimental validation of skyrmion-based logic primitives

High robustness against alignment errors and environmental noise

Scalable framework for integrated photonic processing circuits

Abstract

Photonic computing offers a low-power, high-bandwidth paradigm for information processing; however, the analogue nature of conventional architectures means that intrinsic noise and fabrication imperfections greatly impact performance, thereby severely limiting scalability. Recent work on optical skyrmions offers a route to overcoming these limitations by exploiting perturbation-resilient topological invariants assigned to the optical field for computation. Crucially, owing to its relative novelty, an architectural perspective on integrating individual components that manipulate topological charge into a functional system remains an important open goal. In this paper, we take concrete steps toward system-level design by introducing a platform-independent architecture for skyrmion-based logic, built around a modular library of topologically robust optical primitives, including generators, converters, registers, and adders. This framework enables the synthesis and arithmetic manipulation of topological numbers within a unified programmable architecture. We then experimentally validate this approach using multichannel arrays, demonstrating accurate charge readout and high robustness against alignment errors and environmental noise. These results provide a scalable foundation for topologically robust programmable logic arrays, paving the way for compact and integrated photonic processing circuits.