{
  "annotation_id": "031564c4-d695-4e09-84d9-649c6646c8fa",
  "date_created": "2026-03-02T18:02:03.585000Z",
  "date_modified": "2026-03-02T18:02:03.585000Z",
  "file_hash": "d03b5a432c23ad6bcdaad9c8621e34d0d186a7b822b7daa9ef237ee9a941f6e1",
  "private": false,
  "record": {
    "abstract": "Quantum mechanics forbids deterministic discrimination among non-orthogonal\nstates. Nonetheless, the capability to distinguish nonorthogonal states\nunambiguously is an important primitive in quantum information processing. In\nthis work, we experimentally implement generalized measurements in an optical\nsystem and demonstrate the first optimal unambiguous discrimination between\nthree nonorthogonal states, with a success rate of 55%, to be compared with the\n25% maximum achievable using projective measurements. Furthermore we present\nthe first realization of unambiguous discrimination between a pure state and a\nnonorthogonal mixed state.",
    "arxiv_id": "quant-ph/0401002",
    "authors": [
      "Masoud Mohseni",
      "Aephraim M. Steinberg",
      "J\u00e1nos A. Bergou"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.93.200403",
    "journal_ref": "Phys. Rev. Lett. 93, 200403 (2004)",
    "title": "Optical realization of optimal unambiguous discrimination for pure and   mixed quantum states",
    "url": "https://arxiv.org/abs/quant-ph/0401002"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fdbc3be1-1bcf-48aa-be1b-12d967804926",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}