{
  "annotation_id": "0c7049b7-1e21-4e1e-899f-e5708491f52d",
  "date_created": "2026-03-02T18:00:50.378000Z",
  "date_modified": "2026-03-02T18:00:50.378000Z",
  "file_hash": "5c5a2cf714b858d9254cff1d4d641dda9a780cf344a9251f1fb371b73cdce385",
  "private": false,
  "record": {
    "abstract": "This communication describes the observation of a new type of dark\nspontaneous-force optical trap (dark SPOT) obtained without the use of a mask\nblocking the central part of the repumper laser beam. We observe that loading a\nmagneto-optical trap (MOT) from a continuous and intense flux of slowed atoms\nand by appropriately tuning the frequency of the repumper laser is possible to\nachieve basically the same effect of the dark SPOT, using a simpler apparatus.\nThis work characterizes the new system through measurements of absorption and\nfluorescence imaging of the atomic cloud and presents a very simple model to\nexplain the main features of our observations. We believe that this new\napproach may simplify the current experiments to produce quantum degenerated\ngases.",
    "arxiv_id": "physics/0402106",
    "authors": [
      "S. R. Muniz",
      "K. M. F. Magalh\u00e3es",
      "E. A. L. Henn",
      "L. G. Marcassa",
      "V. S. Bagnato"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.optics"
    ],
    "doi": "10.1016/j.optcom.2004.02.062",
    "journal_ref": "Optics Comm. 235 (4-6): 333-340 (2004)",
    "title": "Creating a self-induced dark spontaneous-force optical trap for neutral   atoms",
    "url": "https://arxiv.org/abs/physics/0402106"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6762f469-235d-4af7-b75c-5dfd815706d7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}