Entropy production and fluctuations in a Maxwell's refrigerator with squeezing

TL;DR

This paper investigates how quantum squeezing influences entropy production and fluctuations in a Maxwell's refrigerator model, revealing enhanced cooling and the ability to surpass classical thermodynamic bounds.

Contribution

It introduces a quantum refrigerator model with squeezed reservoirs and analyzes the effects of squeezing on entropy fluctuations and thermodynamic performance.

Findings

Squeezing modifies entropy fluctuations and exchange mechanisms.

Enhanced cooling performance due to squeezing effects.

Possibility to surpass Landauer's bound with squeezed reservoirs.

Abstract

Clarifying the impact of quantumness in the operation and properties of thermal machines represents a major challenge. Here we envisage a toy model acting either as an information-driven fridge or as heat-powered information eraser in which coherences can be naturally introduced in by means of squeezed thermal reservoirs. We study the validity of the transient entropy production fluctuation theorem in the model with and without squeezing as well as its decomposition into adiabatic and non-adiabatic contributions. Squeezing modifies fluctuations and introduces extra mechanisms of entropy exchange. This leads to enhancements in the cooling performance of the refrigerator, and to overcoming Landauer's bound in the setup.