{
  "annotation_id": "870c270c-0822-4351-bc51-9c2f04d2dbfd",
  "date_created": "2026-03-02T18:02:17.266000Z",
  "date_modified": "2026-03-02T18:02:17.266000Z",
  "file_hash": "7501b395665364026ef4ed3c9db9d4b399cfe65c8598eaa013044d8a72a28541",
  "private": false,
  "record": {
    "abstract": "We discuss continuous observation of the momentum of a single atom by\nemploying the high velocity sensitivity of the index of refraction in a driven\n$\\Lambda$-system based on electromagnetically induced transparency (EIT). In\nthe ideal limit of unit collection efficiency this provides a quantum limited\nmeasurement with minimal backaction on the atomic motion. A feedback loop,\nwhich drives the atom with a force proportional to measured signal, provides a\ncooling mechanism for the atomic motion. We derive the master equation which\ndescribes the feedback cooling and show that in the Lamb-Dicke limit the steady\nstate energies are close to the ground state, limited only by the photon\ncollection efficiency. Outside of the Lamb-Dicke regime the predicted\ntemperatures are well below the Doppler limit.",
    "arxiv_id": "quant-ph/0506185",
    "authors": [
      "Peter Rabl",
      "Viktor Steixner",
      "Peter Zoller"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.043823",
    "journal_ref": "Phys. Rev. A 72, 043823 (2005)",
    "title": "Quantum limited velocity readout and quantum feedback cooling of a   trapped ion via electromagnetically induced transparency",
    "url": "https://arxiv.org/abs/quant-ph/0506185"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "03e07936-f731-4e54-9da4-8b8d4c934ebd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}