{
  "annotation_id": "a5fe7a31-a09e-4351-9750-215b3ed4e374",
  "date_created": "2026-03-02T18:02:19.425000Z",
  "date_modified": "2026-03-02T18:02:19.425000Z",
  "file_hash": "f7fcf4cbbdfbafa2abdbfa4e64f65de481d6f753c8fb374b3504f6e9a62b7d51",
  "private": false,
  "record": {
    "abstract": "When a single quantum of electromagnetic field excitation is added to the\nsame spatio-temporal mode of a coherent state, a new field state is generated\nthat exhibits intermediate properties between those of the two parents. Such a\nsingle-photon-added coherent state is obtained by the action of the photon\ncreation operator on a coherent state and can thus be regarded as the result of\nthe most elementary excitation process of a classical light field. Here we\npresent and describe in depth the experimental realization of such states and\ntheir complete analysis by means of a novel ultrafast, time-domain, quantum\nhomodyne tomography technique clearly revealing their non-classical character.",
    "arxiv_id": "quant-ph/0508094",
    "authors": [
      "Alessandro Zavatta",
      "Silvia Viciani",
      "Marco Bellini"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.023820",
    "journal_ref": "Phys. Rev. A 72, 023820 (2005)",
    "title": "Single-photon excitation of a coherent state: catching the elementary   step of stimulated light emission",
    "url": "https://arxiv.org/abs/quant-ph/0508094"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3f25ba82-3130-450e-affd-20349dadc2ac",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}