{
  "id": "1902.03019",
  "version": "v1",
  "published": "2019-02-08T11:12:50.000Z",
  "updated": "2019-02-08T11:12:50.000Z",
  "title": "Space-compatible cavity-enhanced single-photon generation with hexagonal boron nitride",
  "authors": [
    "Tobias Vogl",
    "Ruvi Lecamwasam",
    "Ben C. Buchler",
    "Yuerui Lu",
    "Ping Koy Lam"
  ],
  "categories": [
    "quant-ph",
    "cond-mat.mtrl-sci",
    "physics.optics"
  ],
  "abstract": "Sources of pure and indistinguishable single-photons are critical for near-future optical quantum technologies. Recently, color centers hosted by two-dimensional hexagonal boron nitride (hBN) have emerged as a promising platform for high luminosity room temperature single-photon sources. Despite the brightness of the emitters, the spectrum is rather broad and the single-photon purity is not sufficient for practical quantum information processing. Here, we report integration of such a quantum emitter hosted by hBN into a tunable optical microcavity. A small mode volume of the order of $\\lambda^3$ allows us to Purcell enhance the fluorescence, with the observed excited state lifetime shortening. The cavity significantly narrows the spectrum and improves the single-photon purity by suppression of off-resonant noise. We explore practical applications by evaluating the performance of our single-photon source for quantum key distribution and quantum computing. The complete device is compact and implemented on a picoclass satellite platform, enabling future low-cost satellite-based long-distance quantum networks.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-02-08T11:12:50.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "hexagonal boron nitride",
      "space-compatible cavity-enhanced single-photon generation",
      "satellite-based long-distance quantum networks",
      "luminosity room temperature single-photon sources",
      "high luminosity room temperature single-photon"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}