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Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines
One of the principal objectives of quantum thermodynamics is to explore quantum effects and their potential beneficial role in thermodynamic tasks like work extraction or refrigeration. So far, even though several papers have already shown that quantum effect could indeed bring quantum advantages, a...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395647/ https://www.ncbi.nlm.nih.gov/pubmed/30816164 http://dx.doi.org/10.1038/s41598-019-39300-4 |
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author | Latune, C. L. Sinayskiy, I. Petruccione, F. |
author_facet | Latune, C. L. Sinayskiy, I. Petruccione, F. |
author_sort | Latune, C. L. |
collection | PubMed |
description | One of the principal objectives of quantum thermodynamics is to explore quantum effects and their potential beneficial role in thermodynamic tasks like work extraction or refrigeration. So far, even though several papers have already shown that quantum effect could indeed bring quantum advantages, a global and deeper understanding is still lacking. Here, we extend previous models of autonomous machines to include quantum batteries made of arbitrary systems of discrete spectrum. We establish their actual efficiency, which allows us to derive an efficiency upper bound, called maximal achievable efficiency, shown to be always achievable, in contrast with previous upper bounds based only on the Second Law. Such maximal achievable efficiency can be expressed simply in term of the apparent temperature of the quantum battery. This important result appears to be a powerful tool to understand how quantum features like coherence but also many-body correlations and non-thermal population distribution can be harnessed to increase the efficiency of thermal machines. |
format | Online Article Text |
id | pubmed-6395647 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-63956472019-03-04 Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines Latune, C. L. Sinayskiy, I. Petruccione, F. Sci Rep Article One of the principal objectives of quantum thermodynamics is to explore quantum effects and their potential beneficial role in thermodynamic tasks like work extraction or refrigeration. So far, even though several papers have already shown that quantum effect could indeed bring quantum advantages, a global and deeper understanding is still lacking. Here, we extend previous models of autonomous machines to include quantum batteries made of arbitrary systems of discrete spectrum. We establish their actual efficiency, which allows us to derive an efficiency upper bound, called maximal achievable efficiency, shown to be always achievable, in contrast with previous upper bounds based only on the Second Law. Such maximal achievable efficiency can be expressed simply in term of the apparent temperature of the quantum battery. This important result appears to be a powerful tool to understand how quantum features like coherence but also many-body correlations and non-thermal population distribution can be harnessed to increase the efficiency of thermal machines. Nature Publishing Group UK 2019-02-28 /pmc/articles/PMC6395647/ /pubmed/30816164 http://dx.doi.org/10.1038/s41598-019-39300-4 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Latune, C. L. Sinayskiy, I. Petruccione, F. Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines |
title | Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines |
title_full | Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines |
title_fullStr | Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines |
title_full_unstemmed | Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines |
title_short | Quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines |
title_sort | quantum coherence, many-body correlations, and non-thermal effects for autonomous thermal machines |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6395647/ https://www.ncbi.nlm.nih.gov/pubmed/30816164 http://dx.doi.org/10.1038/s41598-019-39300-4 |
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