{
  "annotation_id": "c389b0e6-7bf4-47d2-b649-032dc7c3a997",
  "date_created": "2026-03-02T18:00:50.145000Z",
  "date_modified": "2026-03-02T18:00:50.145000Z",
  "file_hash": "582fe6081cbc20ead8e625b7e2981bf6553671a0f1edc613529848a4a85ce60f",
  "private": false,
  "record": {
    "abstract": "We have observed a distance-dependent absorption linewidth of cold $^{87}$Rb\natoms close to a dielectric-vacuum interface. This is the first observation of\nmodified radiative properties in vacuum near a dielectric surface. A cloud of\ncold atoms was created using a magneto-optical trap (MOT) and optical molasses\ncooling. Evanescent waves (EW) were used to observe the behavior of the atoms\nnear the surface. We observed an increase of the absorption linewidth with up\nto 25% with respect to the free-space value. Approximately half the broadening\ncan be explained by cavity-quantum electrodynamics (CQED) as an increase of the\nnatural linewidth and inhomogeneous broadening. The remainder we attribute to\nlocal Stark shifts near the surface. By varying the characteristic EW length we\nhave observed a distance dependence characteristic for CQED.",
    "arxiv_id": "physics/0407051",
    "authors": [
      "V. V. Ivanov",
      "R. A. Cornelussen",
      "H. B. van Linden van den Heuvell",
      "R. J. C. Spreeuw"
    ],
    "categories": [
      "physics.atom-ph",
      "quant-ph"
    ],
    "doi": "10.1088/1464-4266/6/11/005",
    "journal_ref": "J. Opt. B: Quantum Semiclass. Opt. 6 (2004) 454-459",
    "title": "Observation of modified radiative properties of cold atoms in vacuum   near a dielectric surface",
    "url": "https://arxiv.org/abs/physics/0407051"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6f00bdbb-1d8e-4afa-b436-e302d60f1442",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}