{
  "annotation_id": "32b0a018-8ea0-4bcb-bdea-702f250e9548",
  "date_created": "2026-03-02T18:01:59.930000Z",
  "date_modified": "2026-03-02T18:01:59.930000Z",
  "file_hash": "67a57f56eb0e72ab4f3c554c9260340369988f5cd014de1ce09b9a79c00d00b5",
  "private": false,
  "record": {
    "abstract": "We have prepared and detected quantum coherences with long dephasing times at\nthe level of single trapped cesium atoms. Controlled transport by an \"optical\nconveyor belt\" over macroscopic distances preserves the atomic coherence with\nslight reduction of coherence time. The limiting dephasing effects are\nexperimentally identified and are of technical rather than fundamental nature.\nWe present an analytical model of the reversible and irreversible dephasing\nmechanisms. Coherent quantum bit operations along with quantum state transport\nopen the route towards a \"quantum shift register\" of individual neutral atoms.",
    "arxiv_id": "quant-ph/0304081",
    "authors": [
      "S. Kuhr",
      "W. Alt",
      "D. Schrader",
      "I. Dotsenko",
      "Y. Miroshnychenko",
      "W. Rosenfeld",
      "M. Khudaverdyan",
      "V. Gomer",
      "A. Rauschenbeutel",
      "D. Meschede"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.91.213002",
    "journal_ref": "Phys. Rev. Lett. 91, 213002 (2003)",
    "title": "Coherence properties and quantum state transportation in an optical   conveyor belt",
    "url": "https://arxiv.org/abs/quant-ph/0304081"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8f6d1e32-fbea-4416-8c4a-6386fb1678b9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}