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Efficiency of the non-maximally entangled quantum Otto engine

We generalized the maximally entangled Hamiltonian of the isotropic Heisenberg XX model with two spin-1/2 particles to the case of non-maximal entanglement parametrized by the degree of non-maximality 0 < n < 1. The thermal concurrence as the function of the degree of non-maximality in the ent...

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Main Authors: Sukamto, Heru, Yuwana, Lila, Purwanto, Agus, Muniandy, Sithi Vinayakam
Format: Article
Published: IOP Publishing: Hybrid Open Access 2024
Subjects:
QC Physics
Online Access:http://eprints.um.edu.my/45383/
https://doi.org/10.1088/1402-4896/ad2cd1
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spelling my.um.eprints.453832024-10-15T03:05:20Z http://eprints.um.edu.my/45383/ Efficiency of the non-maximally entangled quantum Otto engine Sukamto, Heru Yuwana, Lila Purwanto, Agus Muniandy, Sithi Vinayakam QC Physics We generalized the maximally entangled Hamiltonian of the isotropic Heisenberg XX model with two spin-1/2 particles to the case of non-maximal entanglement parametrized by the degree of non-maximality 0 < n < 1. The thermal concurrence as the function of the degree of non-maximality in the entanglement at different values of the exchange parameter is calculated. We analyzed the efficiency of the quantum Otto engine for different scenarios of exchange parameter regimes and the degree of maximal entanglement between the spin states. We showed that it is possible to run the quantum Otto engine using non-maximally entangled states and achieve higher efficiencies by controlling the exchange parameter value with respect to a critical value J c and this feature also depends on the degree of non-maximal entanglement n not equal 1. This result may be useful for harnessing the non-maximal entanglement in quantum heat engine for optimizing the operation of quantum devices interacting with heat bath or environment. IOP Publishing: Hybrid Open Access 2024-04 Article PeerReviewed Sukamto, Heru and Yuwana, Lila and Purwanto, Agus and Muniandy, Sithi Vinayakam (2024) Efficiency of the non-maximally entangled quantum Otto engine. Physica Scripta, 99 (4). 045302. ISSN 0031-8949, DOI https://doi.org/10.1088/1402-4896/ad2cd1 <https://doi.org/10.1088/1402-4896/ad2cd1>. https://doi.org/10.1088/1402-4896/ad2cd1 10.1088/1402-4896/ad2cd1
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
spellingShingle QC Physics
Sukamto, Heru
Yuwana, Lila
Purwanto, Agus
Muniandy, Sithi Vinayakam
Efficiency of the non-maximally entangled quantum Otto engine
description We generalized the maximally entangled Hamiltonian of the isotropic Heisenberg XX model with two spin-1/2 particles to the case of non-maximal entanglement parametrized by the degree of non-maximality 0 < n < 1. The thermal concurrence as the function of the degree of non-maximality in the entanglement at different values of the exchange parameter is calculated. We analyzed the efficiency of the quantum Otto engine for different scenarios of exchange parameter regimes and the degree of maximal entanglement between the spin states. We showed that it is possible to run the quantum Otto engine using non-maximally entangled states and achieve higher efficiencies by controlling the exchange parameter value with respect to a critical value J c and this feature also depends on the degree of non-maximal entanglement n not equal 1. This result may be useful for harnessing the non-maximal entanglement in quantum heat engine for optimizing the operation of quantum devices interacting with heat bath or environment.
format Article
author Sukamto, Heru
Yuwana, Lila
Purwanto, Agus
Muniandy, Sithi Vinayakam
author_facet Sukamto, Heru
Yuwana, Lila
Purwanto, Agus
Muniandy, Sithi Vinayakam
author_sort Sukamto, Heru
title Efficiency of the non-maximally entangled quantum Otto engine
title_short Efficiency of the non-maximally entangled quantum Otto engine
title_full Efficiency of the non-maximally entangled quantum Otto engine
title_fullStr Efficiency of the non-maximally entangled quantum Otto engine
title_full_unstemmed Efficiency of the non-maximally entangled quantum Otto engine
title_sort efficiency of the non-maximally entangled quantum otto engine
publisher IOP Publishing: Hybrid Open Access
publishDate 2024
url http://eprints.um.edu.my/45383/
https://doi.org/10.1088/1402-4896/ad2cd1
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score 13.211869

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