{
  "annotation_id": "97b90d51-57c1-4461-bd96-6851754d1dde",
  "date_created": "2026-03-02T18:02:19.405000Z",
  "date_modified": "2026-03-02T18:02:19.405000Z",
  "file_hash": "7b08560c1fa3154b68b613f274050a788a202f3050e79b4f343d7f07b3098833",
  "private": false,
  "record": {
    "abstract": "The maximum distance of quantum communication is limited due to the photon\nloss and detector noise. Exploiting entanglement swapping, quantum relay could\noffer ways to extend the achievable distance by increasing the signal to noise\nratio. In this letter we present an experimental simulation of long distance\nquantum communication, in which the superiority of quantum relay is\ndemonstrated. Assisted by quantum relay, we greatly extend the distance limit\nof unconditional secure quantum communication.",
    "arxiv_id": "quant-ph/0508062",
    "authors": [
      "An-Ning Zhang",
      "Yu-Ao Chen",
      "Chao-Yang Lu",
      "Xiao-Qi Zhou",
      "Zhi Zhao",
      "Qiang Zhang",
      "Tao Yang",
      "Jian-Wei Pan"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Quantum-Relay-Assisted Key Distribution over High Photon Loss Channels",
    "url": "https://arxiv.org/abs/quant-ph/0508062"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "385d2021-975f-42e2-b6b8-7b968f513dcc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}