{
  "annotation_id": "d4981b20-07f2-40a6-91f6-2b3780721b05",
  "date_created": "2026-03-02T18:02:10.390000Z",
  "date_modified": "2026-03-02T18:02:10.390000Z",
  "file_hash": "e25de257709036c598cac0b532221a6428301d6f6da242c119f049cd3b52a728",
  "private": false,
  "record": {
    "abstract": "We address the problem of non-orthogonal two-state discrimination when\nmultiple copies of the unknown state are available. We give the optimal\nstrategy when only fixed individual measurements are allowed and show that its\nerror probability saturates the collective (lower) bound asymptotically. We\nalso give the optimal strategy when adaptivity of individual von Neumann\nmeasurements is allowed (which requires classical communication), and show that\nthe corresponding error probability is exactly equal to the collective one for\nany number of copies. We show that this strategy can be regarded as Bayesian\nupdating.",
    "arxiv_id": "quant-ph/0410097",
    "authors": [
      "A Acin",
      "E. Bagan",
      "M. Baig",
      "Ll. Masanes",
      "R. Munoz-Tapia"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.71.032338",
    "journal_ref": "Phys. Rev. A 71 032338 (2005)",
    "title": "Multiple copy 2-state discrimination with individual measurements",
    "url": "https://arxiv.org/abs/quant-ph/0410097"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f1d71544-39ca-4c71-b6b2-8f3615d08665",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}