{
  "id": "2309.12131",
  "version": "v1",
  "published": "2023-09-21T14:52:04.000Z",
  "updated": "2023-09-21T14:52:04.000Z",
  "title": "Temperature dependence of charge conversion during NV-center relaxometry",
  "authors": [
    "Isabel Cardoso Barbosa",
    "Jonas Gutsche",
    "Dennis Lönard",
    "Stefan Dix",
    "Artur Widera"
  ],
  "comment": "8 pages, 7 figures",
  "categories": [
    "quant-ph",
    "cond-mat.mes-hall"
  ],
  "abstract": "Temperature-dependent nitrogen-vacancy (NV)-center relaxometry is an established tool to characterize paramagnetic molecules near to a sensing diamond, gaining momentum in different fields of science. However, recent results indicate that conversion between NV-center charge states impedes these measurements and influences the results for the $T_1$ time. While the temperature dependence of NV centers' $T_1$ time is well-studied, additional contributions from temperature-dependent charge conversion during the dark time may further affect the measurement results. We combine temperature-dependent relaxometry and fluorescence spectroscopy at varying laser powers to unravel the temperature dependence of charge conversion in nanodiamond for biologically relevant temperatures. While we observe a decrease of the $T_1$ time with increasing temperatures, charge conversion remains unaffected by the temperature change. These results allow the temperature dependent performance of $T_1$ relaxometry without further consideration of temperature dependence of charge conversion.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-09-21T14:52:04.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "temperature dependence",
      "nv-center relaxometry",
      "nv-center charge states impedes",
      "temperature-dependent charge conversion",
      "charge conversion remains"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}