{
  "annotation_id": "72396727-fb7f-42ee-a69f-0d9e1c1bad20",
  "date_created": "2026-03-02T18:02:13.467000Z",
  "date_modified": "2026-03-02T18:02:13.467000Z",
  "file_hash": "fe919184507793517c29261c603954eff8a4d4d7357fcb647a6eb991ae2a0156",
  "private": false,
  "record": {
    "abstract": "We present a charge integration photon detector (CIPD) that enables the\nefficient measurement of photon number states at the telecom-fiber wavelengths\nwith a quantum efficiency of 80% and a resolution less than 0.5 electrons at 1\nHz sampling. The CIPD consists of an InGaAs PIN photodiode and a GaAs JFET in a\ncharge integration amplifier, which is cooled to 4.2 K to reduce thermal noise\nand leakage current. The charge integration amplifier exhibits a low noise\nlevel of 470 nV/Hz1/2. The dark count is as low as 500 electrons/hour.",
    "arxiv_id": "quant-ph/0503050",
    "authors": [
      "Mikio Fujiwara",
      "Masahide Sasaki"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1063/1.1886903",
    "title": "Multiphoton discrimination at telecom wavelength with charge integration   photon detector",
    "url": "https://arxiv.org/abs/quant-ph/0503050"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5b1ffe0f-67da-4f29-ae05-fb7fca5f9278",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}