{
  "annotation_id": "7bc21350-6475-4335-9616-d52a53bf8e6d",
  "date_created": "2026-03-02T18:02:13.679000Z",
  "date_modified": "2026-03-02T18:02:13.679000Z",
  "file_hash": "924437b08fd83c6ffe0d0070987a4893741d13a50ed0a5d38923ba18db594d16",
  "private": false,
  "record": {
    "abstract": "Spontaneous emission of a photon by an atom is described theoretically in\nthree dimensions with the initial wave function of a finite-mass atom taken in\nthe form of a finite-size wave packet. Recoil and wave-packet spreading are\ntaken into account. The total atom-photon wave function is found in the\nmomentum and coordinate representations as the solution of an initial-value\nproblem. The atom-photon entanglement arising in such a process is shown to be\nclosely related to the structure of atom and photon wave packets which can be\nmeasured in the coincidence and single-particle schemes of measurements. Two\npredicted effects, arising under the conditions of high entanglement, are\nanomalous narrowing of the coincidence wave packets and, under different\nconditions, anomalous broadening of the single-particle wave packets.\nFundamental symmetry relations between the photon and atom single-particle and\ncoincidence wave packet widths are established. The relationship with the\nfamous scenario of Einstein-Podolsky-Rosen is discussed.",
    "arxiv_id": "quant-ph/0412107",
    "authors": [
      "M. V. Fedorov",
      "M. A. Efremov",
      "A. E. Kazakov",
      "K. W. Chan",
      "C. K. Law",
      "J. H. Eberly"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.032110",
    "title": "Spontaneous emission of a photon: wave packet structures and atom-photon   entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0412107"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7873ff80-5a4b-4af9-a0af-f7caad9507f4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}