{
  "annotation_id": "7cdd88c0-81a1-4ab2-9664-f67d44899f96",
  "date_created": "2026-03-02T18:02:06.217000Z",
  "date_modified": "2026-03-02T18:02:06.217000Z",
  "file_hash": "240c0e0c84167a33635110ad71dedb3f9349793811a01c8baaa8b82543dee6f4",
  "private": false,
  "record": {
    "abstract": "When the electromagnetic field is detected by stimulated emission, rather\nthan by absorption, antinormally ordered photodetection can be realized. One of\nthe distinct features of this photodetection scheme is its sensitivity to\nzero-point fluctuation due to the existence of the spontaneous emission. We\nhave recently succeeded in experimentally demonstrating the antinormally\nordered photodetection by exploiting nondegenerate stimulated parametric\ndown-conversion process. To properly account for the experiment, the detection\nprocess needs to be treated with time-dependent and continuous-mode operators\nbecause of the broadband nature of the parametric down-conversion process and\nthe wide spectrum of the pump that we used. Here, we theoretically analyze the\nantinormally ordered intensity correlation of the continuous-mode fields by\npursuing the detection process in the Heisenberg picture. It is shown that the\nexcess positive correlation due to zero-point fluctuation reduces because of\nthe frequency-distinguishability of the two emitted photon pairs.",
    "arxiv_id": "quant-ph/0402043",
    "authors": [
      "Koji Usami",
      "Akihisa Tomita",
      "Kazuo Nakamura"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Int. J. Quantum Inf. 2,101 (2004)",
    "title": "Antinormally Ordered Photodetection of Continuous-mode Field",
    "url": "https://arxiv.org/abs/quant-ph/0402043"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "085f031e-476a-4d32-b104-1cfc61fec780",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}