{
  "annotation_id": "e4875cd3-8ed5-46ad-8595-ed2d23313c0e",
  "date_created": "2026-03-02T18:01:14.691000Z",
  "date_modified": "2026-03-02T18:01:14.691000Z",
  "file_hash": "09693256c0ac7540cbd9a1c840209665c4aa51fb0b960c094d77bb9d85d704e5",
  "private": false,
  "record": {
    "abstract": "This paper presents the principles and experimental results of an optical\nfiber QKD system operating at 1550 nm, and using the BB84 protocol with QPSK\nsignals. Our experimental setup consists of a time-multiplexed super-homodyne\nconfiguration using P.I.N detectors in a differential scheme as an alternative\nto avalanche photon counting. Transmission over 11km of optical fiber has been\ndone using this detection scheme and major relevant characteristics such as\nnoise, quantum efficiency and bit error rate (BER) are reported.",
    "arxiv_id": "physics/0611057",
    "authors": [
      "M. B. Costa e Silva",
      "Q. Xu",
      "S. Agnolini",
      "P. Gallion",
      "F. J. Mendieta"
    ],
    "categories": [
      "physics.optics"
    ],
    "title": "Homodyne detection for quantum key distribution: an alternative to   photon counting in BB84 protocol",
    "url": "https://arxiv.org/abs/physics/0611057"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "334cf33d-213b-4d8a-ae0e-5d389b089e19",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}