{
  "annotation_id": "da07bb90-78b2-4483-b2f9-726a613996cd",
  "date_created": "2026-03-02T18:01:59.544000Z",
  "date_modified": "2026-03-02T18:01:59.544000Z",
  "file_hash": "0591a13ec40c1a12da0c078532425388423fccf0631747679d09379e1a7b12c3",
  "private": false,
  "record": {
    "abstract": "We observe that a mesoscopic field made of several tens of microwave photons\nexhibits quantum features when interacting with a single Rydberg atom in a\nhigh-Q cavity. The field is split into two components whose phases differ by an\nangle inversely proportional to the square root of the average photon number.\nThe field and the atomic dipole are phase-entangled. These manifestations of\nphoton graininess vanish at the classical limit. This experiment opens the way\nto studies of large Schrodinger cat states at the quantum-classical boundary.",
    "arxiv_id": "quant-ph/0307185",
    "authors": [
      "Alexia Auffeves",
      "Paolo Maioli",
      "Tristan Meunier",
      "Sebastien Gleyzes",
      "Gilles Nogues",
      "Michel Brune",
      "Jean-Michel Raimond",
      "Serge Haroche"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.91.230405",
    "title": "Entanglement of a Mesoscopic Field with an Atom induced by Photon   Graininess in a Cavity",
    "url": "https://arxiv.org/abs/quant-ph/0307185"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "30eca1b6-1e5e-4707-bcff-666c5a311815",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}