{
  "annotation_id": "71b2bf6a-dba6-46f6-b975-3222a8ecea94",
  "date_created": "2026-03-02T18:02:02.857000Z",
  "date_modified": "2026-03-02T18:02:02.857000Z",
  "file_hash": "5e18790d4e1c73065b44e6774641d124d5a1d4e2e2a1055339409029c42f0ef2",
  "private": false,
  "record": {
    "abstract": "We describe the use of optically levitated microspheres as test masses in\nexperiments aimed at reaching and potentially exceeding the standard quantum\nlimit for position measurements. Optically levitated microspheres have low mass\nand are essentially free of suspension thermal noise, making them well suited\nfor reaching the quantum regime. Table-top experiments using microspheres can\nbridge the gap between quantum-limited position measurements of single atoms\nand measurements with multi-kg test masses like those being used in\ninterferometric gravitational wave detectors.",
    "arxiv_id": "quant-ph/0311138",
    "authors": [
      "Kenneth G. Libbrecht",
      "Eric D Black"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/j.physleta.2003.12.022",
    "journal_ref": "Physics Letters A 321, 99-102 (2004)",
    "title": "Toward Quantum-Limited Position Measurements Using Optically Levitated   Microspheres",
    "url": "https://arxiv.org/abs/quant-ph/0311138"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ce26a5a1-c4c1-427c-bbd5-17972b75bc3f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}