Attaining Carnot efficiency with quantum and nanoscale heat engines

Abstract A heat engine operating in the one-shot finite-size regime, where systems composed of a small number of quantum particles interact with hot and cold baths and are restricted to one-shot measurements, delivers fluctuating work. Further, engines with lesser fluctuation produce a lesser amount...

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Autores principales:	Mohit Lal Bera, Maciej Lewenstein, Manabendra Nath Bera
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/df8a0986cd1c4e6d88c9d9eb17592b09
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spelling	oai:doaj.org-article:df8a0986cd1c4e6d88c9d9eb17592b092021-12-02T14:26:49ZAttaining Carnot efficiency with quantum and nanoscale heat engines10.1038/s41534-021-00366-62056-6387https://doaj.org/article/df8a0986cd1c4e6d88c9d9eb17592b092021-02-01T00:00:00Zhttps://doi.org/10.1038/s41534-021-00366-6https://doaj.org/toc/2056-6387Abstract A heat engine operating in the one-shot finite-size regime, where systems composed of a small number of quantum particles interact with hot and cold baths and are restricted to one-shot measurements, delivers fluctuating work. Further, engines with lesser fluctuation produce a lesser amount of deterministic work. Hence, the heat-to-work conversion efficiency stays well below the Carnot efficiency. Here we overcome this limitation and attain Carnot efficiency in the one-shot finite-size regime, where the engines allow the working systems to simultaneously interact with two baths via the semi-local thermal operations and reversibly operate in a one-step cycle. These engines are superior to the ones considered earlier in work extraction efficiency, and, even, are capable of converting heat into work by exclusively utilizing inter-system correlations. We formulate a resource theory for quantum heat engines to prove the results.Mohit Lal BeraMaciej LewensteinManabendra Nath BeraNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 7, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
spellingShingle	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95 Mohit Lal Bera Maciej Lewenstein Manabendra Nath Bera Attaining Carnot efficiency with quantum and nanoscale heat engines
description	Abstract A heat engine operating in the one-shot finite-size regime, where systems composed of a small number of quantum particles interact with hot and cold baths and are restricted to one-shot measurements, delivers fluctuating work. Further, engines with lesser fluctuation produce a lesser amount of deterministic work. Hence, the heat-to-work conversion efficiency stays well below the Carnot efficiency. Here we overcome this limitation and attain Carnot efficiency in the one-shot finite-size regime, where the engines allow the working systems to simultaneously interact with two baths via the semi-local thermal operations and reversibly operate in a one-step cycle. These engines are superior to the ones considered earlier in work extraction efficiency, and, even, are capable of converting heat into work by exclusively utilizing inter-system correlations. We formulate a resource theory for quantum heat engines to prove the results.
format	article
author	Mohit Lal Bera Maciej Lewenstein Manabendra Nath Bera
author_facet	Mohit Lal Bera Maciej Lewenstein Manabendra Nath Bera
author_sort	Mohit Lal Bera
title	Attaining Carnot efficiency with quantum and nanoscale heat engines
title_short	Attaining Carnot efficiency with quantum and nanoscale heat engines
title_full	Attaining Carnot efficiency with quantum and nanoscale heat engines
title_fullStr	Attaining Carnot efficiency with quantum and nanoscale heat engines
title_full_unstemmed	Attaining Carnot efficiency with quantum and nanoscale heat engines
title_sort	attaining carnot efficiency with quantum and nanoscale heat engines
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/df8a0986cd1c4e6d88c9d9eb17592b09
work_keys_str_mv	AT mohitlalbera attainingcarnotefficiencywithquantumandnanoscaleheatengines AT maciejlewenstein attainingcarnotefficiencywithquantumandnanoscaleheatengines AT manabendranathbera attainingcarnotefficiencywithquantumandnanoscaleheatengines
_version_	1718391341269909504

Attaining Carnot efficiency with quantum and nanoscale heat engines

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