Dissipative Quantum Battery in the Ultrastrong Coupling Regime Between Two Oscillators
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Quantum Physics arXiv:2602.15235 (quant-ph) [Submitted on 16 Feb 2026] Title:Dissipative Quantum Battery in the Ultrastrong Coupling Regime Between Two Oscillators Authors:Yu-qiang Liu, Yi-jia Yang, Zheng Liu, Bao-qing Guo, Ting-ting Ma, Zunlue Zhu, Wuming Liu, Xingdong Zhao, Chang-shui Yu View a PDF of the paper titled Dissipative Quantum Battery in the Ultrastrong Coupling Regime Between Two Oscillators, by Yu-qiang Liu and 8 other authors View PDF HTML (experimental) Abstract:In this work, we propose an open quantum battery that stores and releases energy by employing a two-mode ultrastrongly coupled bosonic system, with one mode (the charger) coupled to an independent heat reservoir. Our results demonstrate that both the charging energy and ergotropy of the quantum batteries can be significantly enhanced within the ultra-strong coupling regime and across a broader temperature range in transient time. A unidirectional energy flow is achieved by controlling the system's initial state through its two-mode squeezed ground state. Furthermore, we show that the steady-state stored energy, along with its corresponding ergotropy, can be enhanced at larger temperatures and stronger coupling strengths. Notably, a purely beam-splitter or two-mode squeezing interaction yields zero ergotropy. These findings indicate that the enhanced stored energy and ergotropy of the quantum battery arises principally from the combined effects of beam-splitter and parametric amplification (squeezing) couplings. In addition, the presence of the squared electromagnetic vector potential term can prevent a phase transition and achieve a significant charging energy and high ergotropy in the deep-strong coupling regime. The results presented herein enhance our understanding of the operating principles of open bosonic quantum batteries. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2602.15235 [quant-ph] (or arXiv:2602.15235v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.15235 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Yuqiang Liu [view email] [v1] Mon, 16 Feb 2026 22:26:19 UTC (1,001 KB) Full-text links: Access Paper: View a PDF of the paper titled Dissipative Quantum Battery in the Ultrastrong Coupling Regime Between Two Oscillators, by Yu-qiang Liu and 8 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-02 References & Citations INSPIRE HEP NASA ADSGoogle Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv (What is alphaXiv?) Links to Code Toggle CatalyzeX Code Finder for Papers (What is CatalyzeX?) DagsHub Toggle DagsHub (What is DagsHub?) GotitPub Toggle Gotit.pub (What is GotitPub?) Huggingface Toggle Hugging Face (What is Huggingface?) Links to Code Toggle Papers with Code (What is Papers with Code?) ScienceCast Toggle ScienceCast (What is ScienceCast?) Demos Demos Replicate Toggle Replicate (What is Replicate?) Spaces Toggle Hugging Face Spaces (What is Spaces?) Spaces Toggle TXYZ.AI (What is TXYZ.AI?) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower (What are Influence Flowers?) Core recommender toggle CORE Recommender (What is CORE?) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs. Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)