Topological information device operating at the Landauer limit

TL;DR

This paper proposes a topological information device based on spin-momentum locking that operates at the Landauer limit, enabling maximal energy efficiency and energy extraction from information processing.

Contribution

It introduces a novel Maxwell's demon implementation using topological matter and nuclear spins, achieving operation at the fundamental thermodynamic limit.

Findings

Device operates at the Landauer limit with minimal heat dissipation.

All available energy per bit can be converted into electrical work.

Device exhibits ideal memristor current-voltage characteristics.

Abstract

We propose and theoretically investigate a novel Maxwell's demon implementation based on the spin-momentum locking property of topological matter. We use nuclear spins as a memory resource which provides the advantage of scalability. We show that this topological information device can ideally operate at the Landauer limit; the heat dissipation required to erase one bit of information stored in the demon's memory approaches $k_B T\ln2$. Furthermore, we demonstrate that all available energy, $k_B T\ln2$ per one bit of information, can be extracted in the form of electrical work. Finally, we find that the current-voltage characteristics of topological information device satisfy the conditions of an ideal memristor.