{
  "annotation_id": "98dd244c-8afb-4d10-b137-ff1367d812b9",
  "date_created": "2026-02-17T05:53:08.619000Z",
  "date_modified": "2026-02-17T05:53:08.619000Z",
  "file_hash": "4ff6095e4da8e3fd4899186cd59a813e0c6d836a66c6f27feb22d81c88e1c792",
  "private": false,
  "record": {
    "abstract": "Coherent one-way quantum key distribution (COW-QKD) has been widely investigated, and even been deployed in real-world quantum network. However, the proposal of the zero-error attack has critically undermined its security guarantees, and existing experimental implementations have not yet established security against coherent attacks. In this work, we propose and experimentally demonstrate an information-theoretically secure COW-QKD protocol that can resist source side-channel attacks, with secure transmission distances up to 100 km. Our system achieves a secure key rate on the order of kilobits per second over 50 km in the finite-size regime, sufficient for real-time secure voice communication across metropolitan networks. Furthermore, we demonstrate the encrypted transmission of a logo with information-theoretic security over 100 km of optical fiber. These results confirm that COW-QKD can simultaneously provide simplicity and security, establishing it as a strong candidate for deployment in small-scale quantum networks.",
    "arxiv_id": "2601.06772",
    "authors": [
      "Xiao-Yu Cao",
      "Xiao-Ran Sun",
      "Ming-Yang Li",
      "Yu-Shuo Lu",
      "Hua-Lei Yin",
      "Zeng-Bing Chen"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1126/sciadv.aec2776",
    "journal_ref": "Sci. Adv. 12, eaec2776 (2026)",
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "title": "Experimental Coherent One-Way Quantum Key Distribution with Simplicity and Practical Security",
    "url": "https://arxiv.org/abs/2601.06772",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2c3c057d-f96c-409c-b27b-9fc74791e37f",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}