{
  "annotation_id": "a8434119-6835-4938-8a43-17128b95fbd5",
  "date_created": "2026-03-02T18:02:00.215000Z",
  "date_modified": "2026-03-02T18:02:00.215000Z",
  "file_hash": "9b2f6ca7fd72b4542033a4b8d22bc0df09a4ca8e517915ec956332e774af664b",
  "private": false,
  "record": {
    "abstract": "A 2-level atom with degenerate ground state interacting with a quantum field\nis investigated. We show, that the field drives the state of the atom to a\nstationary state, which is non-unique, but depends on the initial state of the\nsystem through some conserved quantities. This non-uniqueness follows from the\ndegeneracy of the ground state of the atom, and when the ground subspace is\ntwo-dimensional, the family of stationary states will depend on a\none-dimensional parameter. Only one of the stationary states in this family is\na pure state, and this state coincides with the known non-coupled population\ntrapped state (zero population in the excited level. Another one stationary\nstate corresponds to an equal weight mixture of the excited level and of the\ncoupled state.",
    "arxiv_id": "quant-ph/0303185",
    "authors": [
      "L. Accardi",
      "S. V. Kozyrev"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1007/s10773-006-9057-8",
    "journal_ref": "International Journal of Theoretical Physics. 2006. V.45. No.4.\n  P.661-678",
    "title": "Coherent population trapping in the stochastic limit",
    "url": "https://arxiv.org/abs/quant-ph/0303185"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4d8b1982-cf07-49b3-aa58-3f01e6c4b536",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}