{
  "abstract": "We present a concept for a superconducting inductance--capacitance (LC) resonator immersed in a magnetic field for gravitational-wave detection in the kHz band. In the long-wavelength limit, a gravitational wave in a static magnetic field induces an oscillating magnetic-field perturbation proportional to the static magnetic field applied to the resonator and to the gravitational-wave strain. We show that a superconducting pickup circuit can convert this perturbation into a flux signal read out by a superconducting quantum interference device (SQUID)-based or quantum-limited amplifier chain. Inspired by resonant-mass detectors, we develop a three-loop coupled-circuit model and derive the equivalent strain-noise spectrum, including thermal noise, SQUID backaction, and measurement imprecision. Prototype measurements demonstrate a quality factor of $Q\\simeq 5\\times 10^5$, while $Q=10^7$ is considered as a future development target. Under the assumed flux coupling and an idealized quantum-limited SQUID noise model, optimized circuits yield projected strain sensitivities of order $10^{-21}\\,\\mathrm{Hz}^{-1/2}$ over $100\\,\\mathrm{Hz}$ bands in the $1$--$20\\,\\mathrm{kHz}$ range. Increasing the active high-field volume and improving quantum-limited readout could enable further sensitivity gains. This compact, tunable detector concept could complement interferometric gravitational-wave searches and motivate investigations of high-frequency astrophysical sources.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.31430",
  "author_total": 9,
  "authors": [
    {
      "name": "D. Ahn"
    },
    {
      "name": "C. Braggio"
    },
    {
      "name": "G. Carugno"
    },
    {
      "name": "D. D'Agostino"
    },
    {
      "name": "R. Di Vora"
    },
    {
      "name": "P. Falferi"
    },
    {
      "name": "A. Ortolan"
    },
    {
      "name": "G. Ruoso"
    },
    {
      "name": "M. L. Ruggiero"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9jmjd7f2mmbb6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.31430",
  "fulltext_url": null,
  "id": "9jmjd7f2mmbb6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.31430",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "openalex",
      "3103|Pulsars and Gravitational Waves Research"
    ]
  ],
  "openalex": "W7223312227",
  "pdf_url": "https://arxiv.org/pdf/2610.31430",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9jmjd7f2mmbb6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.31430",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.31430"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "A superconducting LC resonator in a multi-tesla magnetic field for tabletop kHz gravitational-wave detection",
  "title_text": "A superconducting LC resonator in a multi-tesla magnetic field for tabletop kHz gravitational-wave detection",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/9jmjd7f2mmbb6",
  "venue": "arXiv",
  "versions": []
}