Extracting work from the magnetic field coupled Brownian particles

TL;DR

This paper investigates how magnetic field coupling in Brownian particles enables work extraction from a reservoir, highlighting the effects of measurement directions and potential changes while confirming the generalized second law.

Contribution

It demonstrates that work can be extracted via magnetic coupling even with spatially separated operations and explores the influence of measurement and potential change on work extraction.

Findings

Work can be extracted with spatially separated measurement and potential change.

Simultaneous measurements in different directions increase work extraction.

The generalized second law remains valid in all scenarios.

Abstract

Thermodynamics of the magnetic field coupled Brownian particles is studied. We show that in the presence of the magnetic field, work can be extracted from the reservoir even when the measurement operation and the potential change operation are applied in different spatial directions. In particular, we show that more work can be extracted if the measurements are applied in two different directions simultaneously. In all these cases, we show that the generalized second law involving the measurement information and potential change is satisfied. In addition, we show how the continuous potential change and measurement position affect the work extraction.