Work

Efficiency at Maximum Power of a Carnot Quantum Information Engine

Year: 2023

Type: article

Abstract: Optimizing the performance of thermal machines is an essential task of thermodynamics. We here consider the optimization of information engines that convert information about the state of a system into work. We concretely introduce a generalized finite-time Carnot cycle for a quantum information engine and optimize its power output in the regime of low dissipation. We derive a general formula for its efficiency at maximum power valid for arbitrary working media. We further investigate the optimal performance of a qubit information engine subjected to weak energy measurements.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.130.240401

Authors: Paul Fadler, Alexander Friedenberger, Eric Lutz

Institutions: Friedrich-Alexander-Universität Erlangen-Nürnberg, University of Stuttgart

Language: English

Topic: Advanced Thermodynamics and Statistical Mechanics

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Deutsche Forschungsgemeinschaft

Award: G211919557