{
  "annotation_id": "202c0236-2aa3-4cae-a19c-3da19147f321",
  "date_created": "2026-03-02T18:02:20.776000Z",
  "date_modified": "2026-03-02T18:02:20.776000Z",
  "file_hash": "0c53cbd3c49dfb326ee5ceefae481fa359e82bfc8ec027a5d743442f7417176c",
  "private": false,
  "record": {
    "abstract": "We demonstrate how quantum entanglement can be used for precision frequency\nmeasurements with trapped ions. In particular, we show how to suppress linear\nZeeman shifts in optical frequency measurements by using maximally entangled\nstates of two ions even if the individual ions do not have any\nfield-independent transition. In addition, this technique allows for an\naccurate measurement of small external field frequency shifts such as the\nelectric quadrupole shift which are important for ion clock experiments.",
    "arxiv_id": "quant-ph/0508148",
    "authors": [
      "C. F. Roos"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Precision frequency measurements with entangled states",
    "url": "https://arxiv.org/abs/quant-ph/0508148"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9aea62cc-b3b4-4159-a0c7-f4f670feafa6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}