{
  "abstract": "High-density nitrogen-vacancy (NV) ensembles are promising platforms for solid-state quantum sensing, but their performance is limited by dipolar interactions and inhomogeneous dephasing. Periodic decoupling sequences such as Waugh-Huber-Haeberlen (WAHUHA) can extend the observed stroboscopic decay time, but a longer fitted lifetime does not necessarily imply improved magnetic-field sensitivity. Here, we experimentally demonstrate this disconnect experimentally. WAHUHA increases the fitted stroboscopic decay time from $T_{2}^*$ of 0.9 $μ$s to $T_{2,eff}^*$ of 31 $μ$s, while producing little improvement in dc magnetic-field sensitivity. Using detuning-resolved stroboscopic spectroscopy and finite-pulse Floquet analysis, we show that the long-lived signal arises from phase wrapping and quasienergy branch folding of the one-cycle unitary. These effects reshape the stroboscopic spectrum, and the experimentally relevant folded branches exhibit a reduced local detuning-to-phase transduction slope, $dΦ/dΔ$, which governs the dc magnetic-field response. Our results demonstrate that, under periodic driving, an extended effective dephasing time does not necessarily translate into enhanced dc sensitivity and establish finite pulse Floquet analysis as a practical framework for evaluating coherence in spin ensembles.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.10452",
  "author_total": 6,
  "authors": [
    {
      "name": "Cuong M. Nguyen"
    },
    {
      "name": "Uijin Ko"
    },
    {
      "name": "Seong-Joo Lee"
    },
    {
      "name": "Hyeonsu Kim"
    },
    {
      "name": "Hosung Seo"
    },
    {
      "name": "Sangwon Oh"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2j4eh2zy7v8ve.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.10452",
  "fulltext_url": null,
  "id": "2j4eh2zy7v8ve",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.10452",
  "language": null,
  "licence": "CC-BY-NC-SA-4.0",
  "licence_label": "CC BY-NC-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "2505|Diamond and Carbon-based Materials Research"
    ]
  ],
  "openalex": "W7164132081",
  "pdf_url": "https://arxiv.org/pdf/2606.10452",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-17",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2j4eh2zy7v8ve.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:19Z",
      "native_id": "2606.10452",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.10452"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Floquet analysis of coherence in periodically driven diamond NV ensemble systems",
  "title_text": "Floquet analysis of coherence in periodically driven diamond NV ensemble systems",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:19Z",
  "url": "https://research.draconitic.com/paper/2j4eh2zy7v8ve",
  "venue": "arXiv",
  "versions": []
}