Skyrmion Gas Manipulation for Probabilistic Computing
The topologically protected magnetic spin con_gurations known as skyrmions offer promising applications due to their sta- bility, mobility and localization. In this work, we emphasize how to leverage the thermally driven dynamics of an ensemble of such particles to perform computing tasks. We propose a device employing a skyrmion gas to reshu_e a random signal into an un- correlated copy of itself. This is demonstrated by modelling the ensemble dynam- ics in a collective coordinate approach where skyrmion-skyrmion and skyrmion-boundary interactions are accounted for phenomenologically. Our numerical results are used to develop a proof-of-concept for an energy e_cient (_ _W) device with a low area imprint (_ _m2). Whereas its immediate application to stochastic computing circuit designs will be made apparent, we argue that its basic functionality, reminiscent of an integrate-and fire neuron, qualifies it as a novel bio-inspired building block.