Quantum Otto-type heat engine with fixed frequency

Matos, Richard Quintiliano; de Assis, Rogério Jorge; de Almeida, Norton Gomes

dc.contributor.author	Matos, Richard Quintiliano
dc.contributor.author	de Assis, Rogério Jorge
dc.contributor.author	de Almeida, Norton Gomes
dc.date.accessioned	2024-02-16T17:00:11Z
dc.date.available	2024-02-16T17:00:11Z
dc.date.issued	2023-11-22
dc.identifier.citation	MATOS, Richard Quintiliano; DE ASSIS, Rogério Jorge; DE ALMEIDA, Norton Gomes. Quantum Otto-type heat engine with fixed frequency. Repositório Institucional da UFSCar, 2023. Dataset. Disponível em: https://repositorio.ufscar.br/handle/ufscar/19347.	*
dc.identifier.uri	https://repositorio.ufscar.br/handle/ufscar/19347
dc.description	In this work we analyze an Otto-type cycle operating with a working substance composed of a quantum harmonic oscillator (QHO). Unlike other studies in which the work extraction is done by varying the frequency of the QHO and letting it thermalize with a squeezed reservoir, here we submit the QHO to a parametric pumping controlled by the squeezing parameter and let it thermalize with a thermal reservoir. We then investigate the role of the squeezing parameter in our Otto-type engine powered by parametric pumping and show that it is possible to reach the Carnot limit by arbitrarily increasing the squeezing parameter. Notably, for certain squeezing parameters r, e.g., r=0.4, the quasistatic Otto limit can be reached even at nonzero power. We also investigated the role of entropy production in the efficiency behavior during the unitary strokes, showing that positive (negative) changes in entropy production correspond to increases (decreases) in engine efficiency, as expected. Furthermore, we show that under thermal reservoirs a work extraction process that is more efficient than the Carnot engine is impossible, regardless of the quantum resource introduced via the Hamiltonian of the system.	eng
dc.description.sponsorship	Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)	por
dc.description.sponsorship	Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)	por
dc.description.sponsorship	Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)	por
dc.description.sponsorship	Fundação de Amparo à Pesquisa do Estado de Goiás (FAPEG)	por
dc.language.iso	eng	por
dc.publisher	Universidade Federal de São Carlos	por
dc.relation.uri	https://doi.org/10.1103/PhysRevE.108.054131	por
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/br/	*
dc.subject	Quantum harmonic oscillator	eng
dc.subject	Quantum Otto cycle	eng
dc.subject	Quantum Otto heat engine	eng
dc.subject	Oscilador harmônico quântico	por
dc.subject	Ciclo de Otto quântico	por
dc.subject	Motor térmico de Otto quântico	por
dc.title	Quantum Otto-type heat engine with fixed frequency	por
dc.type	Dataset	por
dc.publisher.initials	UFSCar	por
dc.subject.cnpq	CIENCIAS EXATAS E DA TERRA::FISICA::FISICA GERAL::FISICA CLASSICA E FISICA QUANTICA; MECANICA E CAMPOS	por
dc.subject.cnpq	CIENCIAS EXATAS E DA TERRA::FISICA::FISICA GERAL::FISICA ESTATISTICA E TERMODINAMICA	por
dc.description.sponsorshipId	2021/04672-0	por
dc.description.sponsorshipId	465469/2014-0	por
dc.description.sponsorshipId	001	por
dc.publisher.address	Câmpus São Carlos	por
dc.contributor.authorlattes	http://lattes.cnpq.br/4507959453055975	por
dc.contributor.authorlattes	http://lattes.cnpq.br/7703787869253387	por
dc.contributor.authorlattes	http://lattes.cnpq.br/3182841849332242	por
dc.publisher.department	Departamento de Física - DF	por
dc.contributor.authororcid	https://orcid.org/0000-0003-1133-6012	por
dc.contributor.authororcid	https://orcid.org/0000-0001-8517-6774	por