{
  "annotation_id": "5040fb7d-3e70-4a94-ae00-49985d48f7b2",
  "date_created": "2026-03-02T18:02:34.706000Z",
  "date_modified": "2026-03-02T18:02:34.706000Z",
  "file_hash": "77380cbb8eb4a73cdfa2e313b832af960b3fba5a05f11a7ec016839faa8cb5ab",
  "private": false,
  "record": {
    "abstract": "Simple and effective techniques for loading barium ions into linear Paul\ntraps are demonstrated. Two-step photoionization of neutral barium is achieved\nusing a weak intercombination line (6s2 1S0 \u003c-\u003e 6s6p 3P1, 791 nm) followed by\nexcitation above the ionization threshold using a nitrogen gas laser (337 nm).\nIsotopic selectivity is achieved by using a near Doppler-free geometry for\nexcitation of the triplet 6s6p 3P1 state. Additionally, we report a\nparticularly simple and efficient trap loading technique that employs an\nin-expensive UV epoxy curing lamp to generate photoelectrons.",
    "arxiv_id": "quant-ph/0702159",
    "authors": [
      "A. V. Steele",
      "L. R. Churchill",
      "P. F. Griffin",
      "M. S. Chapman"
    ],
    "categories": [
      "quant-ph",
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevA.75.053404",
    "title": "Photoionization and Photoelectric Loading of Barium Ion Traps",
    "url": "https://arxiv.org/abs/quant-ph/0702159"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "46cbfb07-98db-47a4-96de-d29de4e319a1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}