{
  "id": "1707.07205",
  "version": "v1",
  "published": "2017-07-22T19:39:40.000Z",
  "updated": "2017-07-22T19:39:40.000Z",
  "title": "Understanding the magnetic resonance spectrum of nitrogen vacancy centers in an ensemble of randomly-oriented nanodiamonds",
  "authors": [
    "Keunhong Jeong",
    "Anna J. Parker",
    "Ralph H. Page",
    "Alexander Pines",
    "Christophoros C. Vassiliou",
    "Jonathan P. King"
  ],
  "comment": "6 pages, 5 figures",
  "categories": [
    "quant-ph",
    "cond-mat.mes-hall"
  ],
  "abstract": "Nanodiamonds containing nitrogen vacancy (NV-) centers show promise for a number of emerging applications including targeted in vivo imaging and generating nuclear spin hyperpolarization for enhanced NMR spectroscopy and imaging. Here, we develop a detailed understanding of the magnetic resonance behavior of NV- centers in an ensemble of nanodiamonds with random crystal orientations. Two-dimensional optically detected magnetic resonance spectroscopy reveals the distribution of energy levels, spin populations, and transition probabilities that give rise to a complex spectrum. We identify overtone transitions that are inherently insensitive to crystal orientation and give well-defined transition frequencies that access the entire nanodiamond ensemble. These transitions may be harnessed for high-resolution imaging and generation of nuclear spin hyperpolarization. The data are well described by numerical simulations from the zero- to high-field regimes, including the intermediate regime of maximum complexity. We evaluate the prospects of nanodiamond ensembles specifically for nuclear hyperpolarization and show that frequency-swept dynamic nuclear polarization may transfer a large amount of the NV- center's hyperpolarization to nuclear spins by sweeping over a small region of its spectrum.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-07-22T19:39:40.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "nitrogen vacancy centers",
      "magnetic resonance spectrum",
      "randomly-oriented nanodiamonds",
      "detected magnetic resonance spectroscopy",
      "optically detected magnetic resonance"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}