{
  "annotation_id": "bb5b24b6-4754-43be-b9f4-e5e174c5be06",
  "date_created": "2026-03-02T18:00:50.271000Z",
  "date_modified": "2026-03-02T18:00:50.271000Z",
  "file_hash": "7ac38cf348bd9ee05590483cf24ec8c1bc4a4c9ffd1bf26f52d95b8b9ef9acdd",
  "private": false,
  "record": {
    "abstract": "Vacuum polarization, an effect predicted nearly 70 years ago, is still yet to\nbe directly detected despite significant experimental effort. Previous attempts\nhave made use of large liquid-helium cooled electromagnets which inadvertently\ngenerate spurious signals that mask the desired signal. We present a novel\napproach for the ultra-sensitive detection of optical birefringence that can be\nusefully applied to a laboratory detection of vacuum polarization. The new\ntechnique has a predicted birefringence measurement sensitivity of $\\Delta n\n\\sim 10^{20}$ in a 1 second measurement. When combined with the extreme\npolarizing fields achievable in this design we predict that a vacuum\npolarization signal will be seen in a measurement of just a few days in\nduration.",
    "arxiv_id": "physics/0402073",
    "authors": [
      "Andre N. Luiten",
      "Jesse C. Petersen"
    ],
    "categories": [
      "physics.ins-det",
      "hep-ex",
      "physics.gen-ph",
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevA.70.033801",
    "title": "Ultrafast Resonant Polarization Interferometry: Towards the First Direct   Detection of Vacuum Polarization",
    "url": "https://arxiv.org/abs/physics/0402073"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f1425b51-e6ca-4589-bd10-e416f1a9d6c5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}