{
  "annotation_id": "f9925b1e-4ce6-4ef7-82c3-b3a36b20f221",
  "date_created": "2026-03-02T18:01:07.404000Z",
  "date_modified": "2026-03-02T18:01:07.404000Z",
  "file_hash": "28ca3477cc1e51ade97c03e0aad49f7afe5220819f3c10616d9bdbb9ac431744",
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  "record": {
    "abstract": "We report on the observation of Bloch oscillations on the unprecedented time\nscale of severalseconds. The experiment is carried out with ultra-cold bosonic\nstrontium-88 loaded into a vertical optical standing wave. The negligible\natom-atom elastic cross section and the absence of spin makes $^{88}$Sr an\nalmost ideal Bose gas insensitive to typical mechanisms of decoherence due to\nthermalization and to external stray fields. The small size enables precision\nmeasurements of forces at micrometer scale. This is a challenge in physics for\nstudies of surfaces, Casimir effects, and searches for deviations from\nNewtonian gravity predicted by theories beyond the standard model.",
    "arxiv_id": "physics/0605018",
    "authors": [
      "G. Ferrari",
      "N. Poli",
      "F. Sorrentino",
      "G. M. Tino"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevLett.97.060402",
    "journal_ref": "Phys. Rev. Lett. vol. 97, 060402 (2006)",
    "title": "Long-lived Bloch oscillations with bosonic Sr atoms and application to   gravity measurement at micrometer scale",
    "url": "https://arxiv.org/abs/physics/0605018"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "21694a3b-a76f-4d43-b578-bfc41473a888",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}