Entanglement-assisted charging of quantum batteries within optomechanical framework

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F25%3A73631181" target="_blank" >RIV/61989592:15310/25:73631181 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/pre/abstract/10.1103/9vv8-s8r1" target="_blank" >https://journals.aps.org/pre/abstract/10.1103/9vv8-s8r1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/9vv8-s8r1" target="_blank" >10.1103/9vv8-s8r1</a>

Result language
angličtina
Original language name
Entanglement-assisted charging of quantum batteries within optomechanical framework
Original language description
In this study, we propose an optomechanical cavity as a promising platform for charging a quantum battery embedding two two-level atoms. We assume the atoms and the single optical mode are initialized in their corresponding ground states while the mechanical resonator can be either in vacuum or its first excited state. Our findings reveal a remarkable correspondence between the generated entanglement between the atoms and the ergotropy of the quantum battery, i.e., the available energy by unitary operations. This observation of such a high degree of similarity between entanglement and ergotropy seems to be unprecedented. Furthermore, both linear and nonlinear optomechanical couplings are shown to enhance ergotropy provided being properly adjusted. Additionally, we examine the statistical properties of the optical and mechanical modes using the Mandel parameter. Our results indicate that the nonclassicality of the optical mode significantly boosts the available energy. In contrast, less negative Mandel parameter values, reflecting decreased nonclassicality, are preferable to assist the charging process. These insights suggest the possibility of using quantum features to optimize the efficiency of quantum batteries.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
<a href="/en/project/GX21-13265X" target="_blank" >GX21-13265X: Quantum non-Gaussian coherence</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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