{
  "annotation_id": "71841f74-5e87-413d-9f46-cdc0b3820bc5",
  "date_created": "2026-03-02T18:02:48.535000Z",
  "date_modified": "2026-03-02T18:02:48.535000Z",
  "file_hash": "23612fea31aec334f58877f80c27edae94b079eeb22681ded974ae956eecc257",
  "private": false,
  "record": {
    "abstract": "We show that by using a feedback loop it is possible to reduce the\nfluctuations in one quadrature of the vibrational degree of freedom of a\ntrapped ion below the quantum limit. The stationary state is not a proper\nsqueezed state, but rather a ``squashed\u0027\u0027 state, since the uncertainty in the\northogonal quadrature, which is larger than the standard quantum limit, is\nunaffected by the feedback action.",
    "arxiv_id": "quant-ph/9911069",
    "authors": [
      "Stefano Mancini",
      "David Vitali",
      "Paolo Tombesi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1464-4266/2/2/322",
    "journal_ref": "J. Opt. B: Quantum Semiclass. Opt. 2, 190 (2000)",
    "title": "Motional Squashed States",
    "url": "https://arxiv.org/abs/quant-ph/9911069"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "34ef24c2-0321-4c40-a911-7d380881b9f8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}