{
  "annotation_id": "682db60f-18fd-4bf9-9db3-9ef35cf310aa",
  "date_created": "2026-03-02T18:02:20.754000Z",
  "date_modified": "2026-03-02T18:02:20.754000Z",
  "file_hash": "0f760099893a05b81bd3d84d16a3a948190893d492ef1c0fc2f25752759d96b5",
  "private": false,
  "record": {
    "abstract": "We investigate the correlations between any number of arbitrarily far-apart\nregions of the vacuum of the free Klein-Gordon field by means of its finite\nduration coupling to an equal number of localized detectors. We show that the\ncorrelations between any N such regions enable us to distill an N-partite W\nstate, and therefore exhibit true $N$-fold entanglement. Furthermore, we show\nthat for N=3, the correlations cannot be reproduced by a hybrid local-nonlocal\nhidden-variable model. For N \u003e= 4 the issue remains open.",
    "arxiv_id": "quant-ph/0508085",
    "authors": [
      "J. Silman",
      "B. Reznik"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.71.054301",
    "journal_ref": "Phys. Rev. A 71, 054301 (2005)",
    "title": "Many-region vacuum entanglement: Distilling a W state",
    "url": "https://arxiv.org/abs/quant-ph/0508085"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8476677f-7239-4f28-aaa1-87a908e87cc8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}