Efficiency at Maximum Power of a Carnot Quantum Information Engine
Paul Fadler, Alexander Friedenberger, Eric Lutz
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.
Topics & Concepts
Carnot cycleHeat engineMaximum power principleComputer scienceWork (physics)Power (physics)Thermal efficiencyQuantumDissipationWork outputQubitEfficient energy useQuantum informationPhysicsThermodynamicsQuantum mechanicsElectrical engineeringEngineeringOrganic chemistryChemistryCombustionAdvanced Thermodynamics and Statistical MechanicsQuantum Electrodynamics and Casimir EffectThermal Radiation and Cooling Technologies