{
  "abstract": "Control of charge-state stability in near-surface quantum defects is critical for nanoscale sensing, yet remains particularly challenging under ultra-high vacuum (UHV), where surface-induced band bending destabilizes the metrologically relevant charge-state. Here, we present a robust and reproducible approach for stabilizing shallowly implanted (< 10 nm deep) nitrogen-vacancy (NV) centers in near-UHV conditions (P = $3 \\times 10^{-9}$ mbar) based on dielectric interface engineering. Through measurements on individually addressable NV centers, we demonstrate that a TiO2 coating on the diamond suppresses surface-induced electrostatic fields, yielding a 79% increase n NV- population and a 45% enhancement in NV-spin resonance contrast at room temperature. Coherent control measurements further reveal suppressed charge-state conversion dynamics. These results establish dielectric screening as a powerful and reproducible strategy to engineer charge transition energetics of NV centers in scanning-probe-compatible geometries under extreme conditions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.20137",
  "author_total": 9,
  "authors": [
    {
      "name": "Atharva Paranjape"
    },
    {
      "name": "Kathrin Küster"
    },
    {
      "name": "Olga Shevstova"
    },
    {
      "name": "Lisa Ebo"
    },
    {
      "name": "Toni Hache"
    },
    {
      "name": "Klaus Kern"
    },
    {
      "name": "Rainer Stöhr"
    },
    {
      "name": "Jörg Wrachtrup"
    },
    {
      "name": "Aparajita Singha"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ada7ytfmyj124.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.20137",
  "fulltext_url": null,
  "id": "ada7ytfmyj124",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.20137",
  "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",
      "2505|Diamond and Carbon-based Materials Research"
    ]
  ],
  "openalex": "W7213581623",
  "pdf_url": "https://arxiv.org/pdf/2609.20137",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-17",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ada7ytfmyj124.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:19Z",
      "native_id": "2609.20137",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.20137"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Electrostatic Stabilization of Near-Surface Quantum Sensors via Dielectric Interface Engineering",
  "title_text": "Electrostatic Stabilization of Near-Surface Quantum Sensors via Dielectric Interface Engineering",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:19Z",
  "url": "https://research.draconitic.com/paper/ada7ytfmyj124",
  "venue": "arXiv",
  "versions": []
}