{
  "annotation_id": "d8cc0c61-2951-46c2-b96b-12850745b3a4",
  "date_created": "2026-03-02T18:02:24.021000Z",
  "date_modified": "2026-03-02T18:02:24.021000Z",
  "file_hash": "e6c4a5f07cd2ca0463c09d9804617a911780518334dc8c3f95a681aa04412f35",
  "private": false,
  "record": {
    "abstract": "We demonstrate multiphoton discrimination at telecom wavelength with the\nreadout frequency of 40 Hz by charge integration photon detector (CIPD). The\nCIPD consists of an InGaAs pin photodiode and a GaAs junction field effect\ntransistor as a pre-amplifier in a charge integration circuit, which is cooled\nto 4.2 K to reduce thermal noise. The quantum efficiency of the CIPD (detector\nitself) is 80% for 1530 nm light, and the readout noise is measured as 0.26\nelectrons at 40 Hz. We can construct Poisson distributions of photo-carriers\nwith distinguished peaks at each photo-carrier number corresponding to the\nsignal to noise ratio of about 3.",
    "arxiv_id": "quant-ph/0512070",
    "authors": [
      "Mikio Fujiwara",
      "Masahide Sasaki"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1364/OL.31.000691",
    "journal_ref": "Optics letters Vol. 31, 691 (2006)",
    "title": "Photon number resolving detection at telecom wavelength with a charge   integration photon detector",
    "url": "https://arxiv.org/abs/quant-ph/0512070"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "af7d02bd-241c-4d72-abd9-1f9f620a4311",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}