{
  "abstract": "Quantum batteries promise faster and more efficient energy storage and extraction by harnessing quantum mechanics, serving as essential building blocks for future quantum devices. A key practical requirement-unidirectional energy flow during charging-is straightforward in classical batteries via potential difference, yet remains a major challenge in the quantum regime due to the inherent reciprocity of coherent coupling. Here, we realize the first backflow-free, nonreciprocal quantum battery in the few-quantum regime, implemented in a highly controlled trapped-ion system via a qubit-reservoir engineering technique. By subtly tailoring quantum interference between coherent and dissipative couplings of two laser-cooled motional modes, we achieve strictly unidirectional energy flow from the charger to the battery. We observe maximum charging power at an exceptional point and demonstrate a complete charge-discharge cycle with unitary work extraction. This work establishes the foundation for directional energy transfer and storage in micro- and nanoscale quantum devices, with broad implications for nonreciprocal energy harvesting, precision metrology, information processing, and quantum thermodynamics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.00878",
  "author_total": 12,
  "authors": [
    {
      "name": "Jie Zhang"
    },
    {
      "name": "Xin-Sheng Chen"
    },
    {
      "name": "Ruo Kun Cai"
    },
    {
      "name": "Gang Xia"
    },
    {
      "name": "Jia-Yang Song"
    },
    {
      "name": "Fu-Wen Zhao"
    },
    {
      "name": "Ting Chen"
    },
    {
      "name": "Wei Wu"
    },
    {
      "name": "Yi Xie"
    },
    {
      "name": "Zhi Jiao Deng"
    },
    {
      "name": "Chun-Wang Wu"
    },
    {
      "name": "Ping-Xing Chen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/43n7pyw6m3zz6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.00878",
  "fulltext_url": null,
  "id": "43n7pyw6m3zz6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.00878",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.00878",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/43n7pyw6m3zz6.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.00878",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.00878"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Experimental Realization of a Nonreciprocal Quantum Battery",
  "title_text": "Experimental Realization of a Nonreciprocal Quantum Battery",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/43n7pyw6m3zz6",
  "venue": "arXiv",
  "versions": []
}