{
  "annotation_id": "e93d4670-0a3e-435a-9004-63b2954f1b84",
  "date_created": "2026-03-02T18:02:06.807000Z",
  "date_modified": "2026-03-02T18:02:06.807000Z",
  "file_hash": "b604d1353a960d9990a7ee1ef73d7dce0da40dc5efea972228410c1969519ec4",
  "private": false,
  "record": {
    "abstract": "We perform echo spectroscopy on ultra cold atoms in atom optics billiards, to\nstudy their quantum dynamics. The detuning of the trapping laser is used to\nchange the ``perturbation\u0027\u0027, which causes a decay in the echo coherence. Two\ndifferent regimes are observed: First, a perturbative regime in which the decay\nof echo coherence is non-monotonic and partial revivals of coherence are\nobserved. These revivals are more pronounced in traps with mixed dynamics as\ncompared to traps where the dynamics is fully chaotic. Next, for stronger\nperturbations, the decay becomes monotonic and independent of the strength of\nthe perturbation. In this regime no clear distinction can be made between\nchaotic traps and traps with mixed dynamics.",
    "arxiv_id": "quant-ph/0404118",
    "authors": [
      "M. F. Andersen",
      "A. Kaplan",
      "T. Gr\u00fcnzweig",
      "N. Davidson"
    ],
    "categories": [
      "quant-ph",
      "nlin.CD",
      "physics.atom-ph"
    ],
    "title": "Decay of Quantum Correlations in Atom Optics Billiards with Chaotic and   Mixed Dynamics",
    "url": "https://arxiv.org/abs/quant-ph/0404118"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8abac97f-21b0-439e-90b1-81ae9fde3dba",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}