{
  "abstract": "Quantum batteries have been proposed as locally precharged work sources for superconducting quantum technologies, suggesting a route to reduce continuously supplied microwave drives. Here we ask whether the pump tone of a quantum-limited parametric amplifier can be replaced, or strongly duty-cycled, by a finite bosonic quantum battery. Quantizing the pump of a nondegenerate parametric amplifier exposes a resource distinction hidden in the classical description: stored pump energy can generate signal-idler photons, but pump phase coherence is required to generate a phase-locked amplifier field. In a closed trilinear model, coherent and phase-randomized coherent pumps with the same photon-number distribution produce comparable pair numbers, yet only the coherent pump produces anomalous two-mode coherence and an EPR-squeezed interference dip. Including leakage, we collect the emitted fields into cascaded temporal modes. At matched collector bandwidth, the coherent pump gives \\(I_{\\min}^{(f)}=0.553\\), whereas the phase-randomized pump gives \\(I_{\\min}^{(f)}=1.94\\) at nearly identical collected energy. Weak amplitude squeezing slightly improves the dip by reducing finite-pump number fluctuations while preserving the coherent displacement. Thus battery-powered parametric amplification requires phase-coherent stored energy, possibly assisted by number-noise reduction, rather than stored energy alone.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.20306",
  "author_total": 1,
  "authors": [
    {
      "name": "Borhan Ahmadi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/b4tady6z7bxg4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.20306",
  "fulltext_url": null,
  "id": "b4tady6z7bxg4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.20306",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7165399979",
  "pdf_url": "https://arxiv.org/pdf/2606.20306",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-18",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/b4tady6z7bxg4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:28Z",
      "native_id": "2606.20306",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.20306"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Quantum Batteries as Work Sources for Phase-Locked Parametric Amplification",
  "title_text": "Quantum Batteries as Work Sources for Phase-Locked Parametric Amplification",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:47Z",
  "url": "https://research.draconitic.com/paper/b4tady6z7bxg4",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1088/1367-2630/aeb4e6",
      "pid": "8yfqxdgr8yrfa",
      "relation": "published-as",
      "title": "Finite quantum pumps for phase-locked parametric amplification: requirements for quantum-battery work sources",
      "venue": "New Journal of Physics"
    }
  ]
}