{
  "annotation_id": "939a0d51-7f46-4ec0-971d-f9801b4636b5",
  "date_created": "2026-03-02T18:01:49.391000Z",
  "date_modified": "2026-03-02T18:01:49.391000Z",
  "file_hash": "ee90a3a0071da74c58d8ec640881635af242b319ec0d7e5f1cb80426296d06c8",
  "private": false,
  "record": {
    "abstract": "Probabilistic quantum non-demolition (QND) measurements can be performed\nusing linear optics and post-selection. Here we show how QND devices of this\nkind can be used in a straightforward way to implement a quantum relay, which\nis capable of extending the range of a quantum cryptography system by\nsuppressing the effects of detector noise. Unlike a quantum repeater, a quantum\nrelay system does not require entanglement purification or the ability to store\nphotons.",
    "arxiv_id": "quant-ph/0204097",
    "authors": [
      "B. C. Jacobs",
      "T. B. Pittman",
      "J. D. Franson"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.052307",
    "title": "Quantum relays and noise suppression using linear optics",
    "url": "https://arxiv.org/abs/quant-ph/0204097"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4e31114f-b914-485a-99c1-c73ed6101e94",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}