{
  "annotation_id": "480cfbc6-76e7-4892-a032-7d2813cca4f6",
  "date_created": "2026-03-02T18:01:52.030000Z",
  "date_modified": "2026-03-02T18:01:52.030000Z",
  "file_hash": "923bd76dd21c7d6b7f6fa9d1be0bce1fc1336e208c881756117062477d1becfb",
  "private": false,
  "record": {
    "abstract": "We study a four-level atomic scheme interacting with four lasers in a\nclosed-loop configuration with a $\\diamondsuit$ (diamond) geometry. We\ninvestigate the influence of the laser phases on the steady state. We show\nthat, depending on the phases and the decay characteristic, the system can\nexhibit a variety of behaviors, including population inversion and complete\ndepletion of an atomic state. We explain the phenomena in terms of multi-photon\ninterference. We compare our results with the phase-dependent phenomena in the\ndouble-$\\Lambda$ scheme, as studied in [Korsunsky and Kosachiov, Phys. Rev A\n{\\bf 60}, 4996 (1999)]. This investigation may be useful for developing\nnon-linear optical devices, and for the spectroscopy and laser-cooling of\nalkali-earth atoms.",
    "arxiv_id": "quant-ph/0207087",
    "authors": [
      "Giovanna Morigi",
      "Sonja Franke-Arnold",
      "Gian-Luca Oppo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.053409",
    "journal_ref": "Phys. Rev. A 66, 053409 (2002).",
    "title": "Phase-dependent interaction in a 4-level atomic configuration",
    "url": "https://arxiv.org/abs/quant-ph/0207087"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b0af15c7-d95a-4bcc-8db8-097a127508bd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}