Demon driven by geometric phase

TL;DR

This paper proposes a theoretical model of a Maxwell's demon driven by geometric phase, which can extract work by exploiting parameter modulations and geometric states in a quantum system connected to reservoirs.

Contribution

It introduces a novel demon mechanism based on geometric phase effects, enabling work extraction with negative entropy production in a quantum system.

Findings

Entropy production during one cycle can be negative.

Work can be extracted from a nonequilibrium steady state.

The Anderson model demonstrates realistic implementation.

Abstract

We theoretically study the entropy production and the work extracted from a system connected to two reservoirs by periodic modulations of the electrochemical potentials of the reservoirs and the parameter of a system Hamiltonian under isothermal conditions. We find that the modulation of the parameters can drive a geometric state, which is away from a nonequilibrium steady state. Using this property, we construct a demon in which the entropy production during the first one-cycle is negative such that we can extract the work if we start from the nonequilibrium steady state without parameter modulations. We use the Anderson model to implement the demon in a realistic situation.