{
  "annotation_id": "2d5a0a28-9a80-4e85-bd0a-c290ca4a9fa3",
  "date_created": "2026-03-02T18:02:33.645000Z",
  "date_modified": "2026-03-02T18:02:33.645000Z",
  "file_hash": "844b00a8594bffe9983711e638ed25ff6b98f822cc6625ea79373594f1144589",
  "private": false,
  "record": {
    "abstract": "We demonstrate entanglement distribution between two remote quantum nodes\nlocated 3 meters apart. This distribution involves the asynchronous preparation\nof two pairs of atomic memories and the coherent mapping of stored atomic\nstates into light fields in an effective state of near maximum polarization\nentanglement. Entanglement is verified by way of the measured violation of a\nBell inequality, and can be used for communication protocols such as quantum\ncryptography. The demonstrated quantum nodes and channels can be used as\nsegments of a quantum repeater, providing an essential tool for robust\nlong-distance quantum communication.",
    "arxiv_id": "quant-ph/0702057",
    "authors": [
      "Chin-Wen Chou",
      "Julien Laurat",
      "Hui Deng",
      "Kyung Soo Choi",
      "Hugues de Riedmatten",
      "Daniel Felinto",
      "H. Jeff Kimble"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1126/science.1140300",
    "journal_ref": "Science 316, 1316 (2007)",
    "title": "Functional Quantum Nodes for Entanglement Distribution over Scalable   Quantum Networks",
    "url": "https://arxiv.org/abs/quant-ph/0702057"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "663008ca-d3ad-47ca-aaf8-a3a72d9126f0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}