Antidot lattices for magnetic reservoir computing

Abstract

Reservoir computing can be implemented in a variety of systems beyond standard CMOS technology. Here, we describe a scheme that relies on a magnetic reservoir consisting of an antidot array, motivated by earlier experiments on ring arrays. We show that antidot lattices can be used as reservoirs much in the same way as ring arrays. We describe geometries in which smaller magnetic fields are needed to induce emergent magnetic patterns in the reservoir, a prerequisite for its use in reservoir computing. High-resolution magnetic imaging of these patterns shows entirely different domains and domain walls, despite the fact that the macroscopic magnetic signal behaves very similarly in both types of reservoirs.