{
  "annotation_id": "5b7b1a45-b544-481f-beed-81922948d883",
  "date_created": "2026-03-02T18:02:17.092000Z",
  "date_modified": "2026-03-02T18:02:17.092000Z",
  "file_hash": "b2ac61d3c1d67ae3ba73d6b58065ca29df96b347128fba0740d2e2be85ea7510",
  "private": false,
  "record": {
    "abstract": "A set of nonlocal correlations that have come to be known as a PR box suggest\nthemselves as a natural unit of nonlocality, much as a singlet is a natural\nunit of entanglement. We present two results relevant to this idea. One is that\na wide class of multipartite correlations can be simulated using local\noperations on PR boxes only. We show this with an explicit scheme, which has\nthe interesting feature that the number of PR boxes required is related to the\ncomputational resources necessary to represent a function defining the\nmultipartite box. The second result is that there are quantum multipartite\ncorrelations, arising from measurements on a cluster state, that cannot be\nsimulated with n PR boxes, for any n.",
    "arxiv_id": "quant-ph/0506180",
    "authors": [
      "Jonathan Barrett",
      "Stefano Pironio"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.95.140401",
    "journal_ref": "Phys. Rev. Lett. 95, 140401 (2005)",
    "title": "Popescu-Rohrlich correlations as a unit of nonlocality",
    "url": "https://arxiv.org/abs/quant-ph/0506180"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1fd1b696-baf9-4260-b99c-154e0665bcd8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}