{
  "annotation_id": "9217a34d-d3cd-48c8-9ff7-ec69715b82dd",
  "date_created": "2026-03-02T18:02:45.085000Z",
  "date_modified": "2026-03-02T18:02:45.085000Z",
  "file_hash": "c99cb3c89d17ed9b64852221cb3d960a78499fa295177d3c4814e7db166dcdd7",
  "private": false,
  "record": {
    "abstract": "We present an experimental and numerical study of the effects of decoherence\non a quantum system whose classical analogue has Kolmogorov-Arnol\u0027d-Moser (KAM)\ntori in its phase space. Atoms are prepared in a caesium magneto-optical trap\nat temperatures and densities which necessitate a quantum description. This\nreal quantum system is coupled to the environment via spontaneous emission. The\ndegree of coupling is varied and the effects of this coupling on the quantum\ncoherence of the system are studied. When the classical diffusion through a\npartially broken torus is \u003c hbar, diffusion of quantum particles is inhibited.\nWe find that increasing decoherence via spontaneous emission increases the\ntransport of quantum particles through the boundary.",
    "arxiv_id": "quant-ph/9902006",
    "authors": [
      "G. H. Ball",
      "K. M. D. Vant",
      "H. Ammann",
      "N. L. Christensen"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1464-4266/1/4/301",
    "title": "A study of quantum decoherence in a system with Kolmogorov-Arnol\u0027d-Moser   tori",
    "url": "https://arxiv.org/abs/quant-ph/9902006"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b8801b20-39cd-44a7-9cdf-da4d16257f1b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}