{
  "annotation_id": "f281845e-f947-4803-af5f-29d7a83a3f7a",
  "date_created": "2026-03-02T18:01:56.459000Z",
  "date_modified": "2026-03-02T18:01:56.459000Z",
  "file_hash": "2c514fc3a7a13b986d6c5f2c5aa45bf183b04fb6665f3b7652173f3fce19f7a8",
  "private": false,
  "record": {
    "abstract": "We show that there exist bipartite quantum states which contain large hidden\nclassical correlation that can be unlocked by a disproportionately small amount\nof classical communication. In particular, there are $(2n+1)$-qubit states for\nwhich a one bit message doubles the optimal classical mutual information\nbetween measurement results on the subsystems, from $n/2$ bits to $n$ bits.\nStates exhibiting this behavior need not be entangled. We study the range of\nstates exhibiting this phenomenon and bound its magnitude.",
    "arxiv_id": "quant-ph/0303088",
    "authors": [
      "David DiVincenzo",
      "Michal Horodecki",
      "Debbie Leung",
      "John Smolin",
      "Barbara Terhal"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.92.067902",
    "journal_ref": "Phys. Rev. Lett. 92, 067902 (2004)",
    "title": "Locking classical correlation in quantum states",
    "url": "https://arxiv.org/abs/quant-ph/0303088"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c2213ce0-84f5-4983-9bc3-f6ebdec2c560",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}