Bounds on fluctuations for ensembles of quantum thermal machines
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/ac4c10
Abstract: We study universal aspects of fluctuations in an ensemble of noninteracting continuous quantum thermal machines in the steady-state limit, beyond linear response. Considering an individual machine, such as a refrigerator, in which relative fluctuations (and… read more here.
Keywords: fluctuations ensembles; lower bound; bounds fluctuations; thermal machines ... See more keywords
Geometric properties of adiabatic quantum thermal machines
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.155407
Abstract: A quantum thermal machine can be controlled by time-periodic perturbations that define a cycle, as in conventional macroscopic thermal machines. This paper presents a general and unified approach to the study of quantum thermal machines,… read more here.
Keywords: geometric properties; quantum thermal; properties adiabatic; thermal machines ... See more keywords
Efficiency at optimal performance: A unified perspective based on coupled autonomous thermal machines.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.105.044145
Abstract: We show that coupled autonomous thermal machines, in the presence of three heat reservoirs and following a global linear-irreversible description, can have efficiency at maximum power (EMP) which is analogous in form to the EMP… read more here.
Keywords: coupled autonomous; efficiency optimal; autonomous thermal; optimal performance ... See more keywords
Measurement-Based Quantum Thermal Machines with Feedback Control
Sign Up to like & getrecommendations! Published in 2022 at "Entropy"
DOI: 10.3390/e25020204
Abstract: We investigated coupled-qubit-based thermal machines powered by quantum measurements and feedback. We considered two different versions of the machine: (1) a quantum Maxwell’s demon, where the coupled-qubit system is connected to a detachable single shared… read more here.
Keywords: qubit; qubit based; coupled qubit; measurement ... See more keywords
Quantum Advantage of Thermal Machines with Bose and Fermi Gases
Sign Up to like & getrecommendations! Published in 2022 at "Entropy"
DOI: 10.3390/e25020372
Abstract: In this article, we show that a quantum gas, a collection of massive, non-interacting, indistinguishable quantum particles, can be realized as a thermodynamic machine as an artifact of energy quantization and, hence, bears no classical… read more here.
Keywords: quantum advantage; quantum; machines bose; thermal machines ... See more keywords