Exploiting coherence for quantum thermodynamic advantage
The introduction of the quantum analogue of a Carnot engine based on a bath comprising of particles with a small amount of coherence initiated an active line of research on the harnessing of different quantum resources for the enhancement of thermal machines beyond the standard reversible limit, wit...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aca49b |
| _version_ | 1797748797608034304 |
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| author | Kenza Hammam Heather Leitch Yassine Hassouni Gabriele De Chiara |
| author_facet | Kenza Hammam Heather Leitch Yassine Hassouni Gabriele De Chiara |
| author_sort | Kenza Hammam |
| collection | DOAJ |
| description | The introduction of the quantum analogue of a Carnot engine based on a bath comprising of particles with a small amount of coherence initiated an active line of research on the harnessing of different quantum resources for the enhancement of thermal machines beyond the standard reversible limit, with an emphasis on non-thermal baths containing quantum coherence. In our work, we investigate the impact of coherence on the thermodynamic tasks of a collision model which is composed of a system interacting, in the continuous time limit, with a series of coherent ancillas of two baths at different temperatures. Our results show the advantages of utilising coherence as a resource in the operation of the machine, and allows it: (a) to exhibit unconventional behaviour such as the appearance of a hybrid refrigerator, capable of simultaneous refrigeration and generation of work, and (b) to function as an engine or a refrigerator with efficiencies larger than the Carnot bound. Moreover, we find an effective upper bound to the efficiency of the thermal machine operating as an engine in the presence of a coherent reservoir. |
| first_indexed | 2024-03-12T16:10:58Z |
| format | Article |
| id | doaj.art-e297fac4393c410192ac60986b7301a4 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:10:58Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-e297fac4393c410192ac60986b7301a42023-08-09T14:09:46ZengIOP PublishingNew Journal of Physics1367-26302022-01-01241111305310.1088/1367-2630/aca49bExploiting coherence for quantum thermodynamic advantageKenza Hammam0https://orcid.org/0000-0002-2471-939XHeather Leitch1https://orcid.org/0000-0002-3312-4750Yassine Hassouni2Gabriele De Chiara3https://orcid.org/0000-0003-3265-9021Centre for Quantum Materials and Technology, School of Mathematics and Physics, Queen’s University Belfast , Belfast BT7 1NN, United Kingdom; Equipe des Sciences de la Matière et du Rayonnement (ESMaR), Faculté des Sciences, Université Mohammed V , Av. Ibn Battouta, B.P. 1014, Agdal, Rabat, Morocco; International Center for Theoretical Physics ICTP , Strada Costiera 11, I-34151 Trieste, ItalyCentre for Quantum Materials and Technology, School of Mathematics and Physics, Queen’s University Belfast , Belfast BT7 1NN, United KingdomEquipe des Sciences de la Matière et du Rayonnement (ESMaR), Faculté des Sciences, Université Mohammed V , Av. Ibn Battouta, B.P. 1014, Agdal, Rabat, MoroccoCentre for Quantum Materials and Technology, School of Mathematics and Physics, Queen’s University Belfast , Belfast BT7 1NN, United KingdomThe introduction of the quantum analogue of a Carnot engine based on a bath comprising of particles with a small amount of coherence initiated an active line of research on the harnessing of different quantum resources for the enhancement of thermal machines beyond the standard reversible limit, with an emphasis on non-thermal baths containing quantum coherence. In our work, we investigate the impact of coherence on the thermodynamic tasks of a collision model which is composed of a system interacting, in the continuous time limit, with a series of coherent ancillas of two baths at different temperatures. Our results show the advantages of utilising coherence as a resource in the operation of the machine, and allows it: (a) to exhibit unconventional behaviour such as the appearance of a hybrid refrigerator, capable of simultaneous refrigeration and generation of work, and (b) to function as an engine or a refrigerator with efficiencies larger than the Carnot bound. Moreover, we find an effective upper bound to the efficiency of the thermal machine operating as an engine in the presence of a coherent reservoir.https://doi.org/10.1088/1367-2630/aca49bquantum thermodynamicsopen quantum systemsquantum coherence |
| spellingShingle | Kenza Hammam Heather Leitch Yassine Hassouni Gabriele De Chiara Exploiting coherence for quantum thermodynamic advantage New Journal of Physics quantum thermodynamics open quantum systems quantum coherence |
| title | Exploiting coherence for quantum thermodynamic advantage |
| title_full | Exploiting coherence for quantum thermodynamic advantage |
| title_fullStr | Exploiting coherence for quantum thermodynamic advantage |
| title_full_unstemmed | Exploiting coherence for quantum thermodynamic advantage |
| title_short | Exploiting coherence for quantum thermodynamic advantage |
| title_sort | exploiting coherence for quantum thermodynamic advantage |
| topic | quantum thermodynamics open quantum systems quantum coherence |
| url | https://doi.org/10.1088/1367-2630/aca49b |
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