Information dynamics, natural computing and Maxwell's demon in two skyrmions system

TL;DR

This paper experimentally evaluates the information dynamics of a two-skyrmion system at room temperature, demonstrating its computational potential and proposing a solid-state Maxwell's demon based on this system.

Contribution

It introduces an experimental analysis of information flow in a two-skyrmion system and proposes a room-temperature Maxwell's demon leveraging this system's properties.

Findings

The system exhibits finite nonlinear XOR computational capability.

Information transfer speed and non-Markovian properties are characterized.

A solid-state Maxwell's demon operating at room temperature is proposed.

Abstract

The probabilistic information flow and natural computational capability of a system with two magnetic skyrmions at room temperature have been experimentally evaluated. Based on this evaluation, an all-solid-state built-in Maxwell's demon operating at room temperature is also proposed. Probabilistic behavior has gained attention for its potential to enable unconventional computing paradigms. However, information propagation and computation in such systems are more complex than in conventional computers, making their visualization essential. In this study, a two-skyrmion system confined within a square potential well at thermal equilibrium was analyzed using information thermodynamics. Transfer entropy and the time derivative of mutual information were employed to investigate the information propagation speed, the absence of a Maxwell's demon in thermal equilibrium, and the system's non-Markovian properties. Furthermore, it was demonstrated that the system exhibits a small but finite computational capability for the nonlinear XOR operation, potentially linked to hidden information in the non-Markovian system. Based on these experiments and analyses, an all-solid-state built-in Maxwell's demon utilizing the two-skyrmion system and operating at room temperature is proposed.