{
  "annotation_id": "6a71b65c-03fd-425f-b885-c3c135e40573",
  "date_created": "2026-03-02T18:02:27.546000Z",
  "date_modified": "2026-03-02T18:02:27.546000Z",
  "file_hash": "341cd0ba1ccd6da201ce7f09897a728ce28382251f5f0ac2836f08639d66c2c6",
  "private": false,
  "record": {
    "abstract": "We describe a protocol for distilling maximally entangled bipartite states\nbetween random pairs of parties from those sharing a tripartite W state, and\nshow that, rather surprisingly, the total distillation rate (the total number\nof EPR pairs distilled per W, irrespective of who shares them) may be done at a\nhigher rate than distillation of bipartite entanglement between specified pairs\nof parties. Specifically, the optimal distillation rate for specified\nentanglement for the W has been previously shown to be the asymptotic\nentanglement of assistance of 0.92 EPR pairs per W, while our protocol can\nasymptotically distill 1 EPR pair per W between random pairs of parties, which\nwe conjecture to be optimal. We thus demonstrate a tradeoff between the overall\nasymptotic rate of EPR distillation and the distribution of final EPR pairs\nbetween parties. We further show that by increasing the number of parties in\nthe protocol that there exist states with fixed lower-bounded distillable\nentanglement for random parties but arbitrarily small distillable entanglement\nfor specified parties.",
    "arxiv_id": "quant-ph/0607126",
    "authors": [
      "Ben Fortescue",
      "Hoi-Kwong Lo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.98.260501",
    "journal_ref": "Phys. Rev. Lett. 98, 260501 (2007)",
    "title": "Random bipartite entanglement from W and W-like states",
    "url": "https://arxiv.org/abs/quant-ph/0607126"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b22bb4dd-aad0-48d4-bcc5-089ffc6e4c6c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}