{
  "annotation_id": "778edd2d-b17f-459c-a7b7-89d316f0e526",
  "date_created": "2026-03-02T18:01:14.698000Z",
  "date_modified": "2026-03-02T18:01:14.698000Z",
  "file_hash": "ed9ffb63c09ac70a55cf0b9857897ed60b326e6cac014d7959eda2985bc11db3",
  "private": false,
  "record": {
    "abstract": "Aided by ultra-high resolution spectroscopy, the overall systematic\nuncertainty of the $^{1}S_{0}$-$^{3}P_{0}$ clock resonance for lattice-confined\n$^{87}$Sr has been characterized to $9\\times10^{-16}$. This uncertainty is at a\nlevel similar to the Cs-fountain primary standard, while the potential\nstability for the lattice clocks exceeds that of Cs. The absolute frequency of\nthe clock transition has been measured to be 429,228,004,229,874.0(1.1) Hz,\nwhere the $2.5\\times10^{-15}$ fractional uncertainty represents the most\naccurate measurement of a neutral-atom-based optical transition frequency to\ndate.",
    "arxiv_id": "physics/0611067",
    "authors": [
      "Martin M. Boyd",
      "Andrew D. Ludlow",
      "Sebastian Blatt",
      "Seth M. Foreman",
      "Tetsuya Ido",
      "Tanya Zelevinsky",
      "Jun Ye"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.gen-ph"
    ],
    "doi": "10.1103/PhysRevLett.98.083002",
    "journal_ref": "Phys. Rev. Lett. 98, 083002 (2007)",
    "title": "$^{87}$Sr lattice clock with inaccuracy below 10$^{-15}$",
    "url": "https://arxiv.org/abs/physics/0611067"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c42bce2a-98e1-4b61-a27a-318ff6bcac31",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}