{
  "annotation_id": "90b50834-ed47-4883-b3d2-34d553569983",
  "date_created": "2026-03-02T18:02:23.669000Z",
  "date_modified": "2026-03-02T18:02:23.669000Z",
  "file_hash": "ff5d2b07c02588acfd5eec05e357f87d820b4d4ad82a576603b8b3bf8bb94faf",
  "private": false,
  "record": {
    "abstract": "We developed a one-way quantum key distribution (QKD) system based upon a\nplanar lightwave circuit (PLC) interferometer. This interferometer is expected\nto be free from the backscattering inherent in commercially available two-way\nQKD systems and phase drift without active compensation. A key distribution\nexperiment with spools of standard telecom fiber showed that the bit error rate\nwas as low as 6% for a 100-km key distribution using an attenuated laser pulse\nwith a mean photon number of 0.1 and was determined solely by the detector\nnoise. This clearly demonstrates the advantages of our PLC-based one-way QKD\nsystem over two-way QKD systems for long distance key distribution.",
    "arxiv_id": "quant-ph/0603041",
    "authors": [
      "Yoshihiro Nambu",
      "Ken\u0027ichiro Yoshino",
      "Akihisa Tomita"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1143/JJAP.45.5344",
    "journal_ref": "Jpn J. Appl. Phys. 45, 5344 (2006)",
    "title": "One-way Quantum Key Distribution System based on Planar Lightwave   Circuits",
    "url": "https://arxiv.org/abs/quant-ph/0603041"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6225bec7-6fcb-4330-9c37-f56d0104a59d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}