{
  "abstract": "Gradiometry provides a versatile alternative to passive environmental shielding in quasi-static magnetometry, effectively suppressing background noise through differential signal extraction. Nevertheless, traditional implementations rely on multi-sensor architectures restricted to spatial gradients, where subtracting signals from independent detectors involves imperfect suppression of common-mode noise and artifacts, limiting their sensitivity. To overcome these limitations, we introduce a quantum control sequence that enables intrinsic temporal and spatial vectorial gradiometry of magnetic fields using a single quantum sensor. Our method provides direct access to first and higher-order derivatives of the magnetic field and extended applicability via auxiliary nuclear spin memory. We showcase this protocol on an ensemble of nitrogen-vacancy (NV) centers in diamond and combine it with mechanical control to realize high-precision differential sensing. Through detailed numerical simulations, we demonstrate the performance of our scheme in two critical DC magnetometry applications: (i) vector magnetic anomaly detection and (ii) non-invasive gradiometry of neuronal action potentials.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.21776",
  "author_total": 4,
  "authors": [
    {
      "name": "Jaime García Oliván"
    },
    {
      "name": "Pablo Acedo"
    },
    {
      "name": "Oliver T. Whaites"
    },
    {
      "name": "Jorge Casanova"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d8kjc1eh5sb42.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.21776",
  "fulltext_url": null,
  "id": "d8kjc1eh5sb42",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.21776",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2609.21776",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-18",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/d8kjc1eh5sb42.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:03Z",
      "native_id": "2609.21776",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.21776"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Intrinsic Vectorial Gradiometry via Quantum Control of a Spin-based Sensor",
  "title_text": "Intrinsic Vectorial Gradiometry via Quantum Control of a Spin-based Sensor",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:03Z",
  "url": "https://research.draconitic.com/paper/d8kjc1eh5sb42",
  "venue": "arXiv",
  "versions": []
}