A quantum Stirling heat engine operating in finite time
arXiv:2307.13062 · doi:10.1103/PhysRevA.108.012220
Abstract
In a quantum Stirling heat engine, the heat exchanged with two thermal baths is partly utilized for performing work by redistributing the energy levels of the working substance. We analyze the thermodynamics of a quantum Stirling engine operating in finite time. We develop a model in which a time-dependent potential barrier changes the energy-level structure of the working substance. The process takes place under a constant interaction with the thermal bath. We further show that in the limit of slow operation of the cycle and low temperature, the efficiency of such an engine approaches Carnot efficiency. We also show that the maximum output power , for the strokes that affect the energy levels, is obtained at an intermediate operating speed, demonstrating the importance of a finite-time analysis.
11 pages, 8 figures
References in corpus (18)
- Quantum Thermodynamic Cycles and quantum heat engines
- Single ion heat engine with maximum efficiency at maximum power
- The second law, Maxwell's daemon and work derivable from quantum heat engines
- Fast Reset and Suppressing Spontaneous Emission of a Superconducting Qubit
- Quantum Szilard Engine
- Demonstrating a Driven Reset Protocol of a Superconducting Qubit
- Quantum Heat Engine With Multi-Level Quantum Systems
- Microwave-Induced Cooling of a Superconducting Qubit
- Quantum-Classical Transition of Photon-Carnot Engine Induced by Quantum Decoherence
- Nonadiabatic single-qubit quantum Otto engine
- Experimental verification of fluctuation relations with a quantum computer
- A quantum Szilard engine without heat from a thermal reservoir
- Quantum statistics of a single-atom Scovil-Schulz-DuBois heat engine
- Finite-time quantum Otto engine: Surpassing the quasi-static efficiency due to friction
- Influence of etching processes on electronic transport in mesoscopic InAs/GaSb quantum well devices
- Enabling the self-contained refrigerator to work beyond its limits by filtering the reservoir
- Quantum particle in a split box: Excitations to the ground state
- Reversing the Landauer's erasure: single-electron Maxwell's demon operating at the limit of thermodynamic efficiency