{
  "annotation_id": "6f8d5296-3c35-48ca-92a3-c7d2ba181f03",
  "date_created": "2026-03-02T18:02:03.644000Z",
  "date_modified": "2026-03-02T18:02:03.644000Z",
  "file_hash": "4525f510043a9cc1aacccfee446b2334df5d4b7fcdca95d0b619d94ee717e812",
  "private": false,
  "record": {
    "abstract": "We consider the problem of designing an optimal quantum detector that\ndistinguishes unambiguously between a collection of mixed quantum states. Using\narguments of duality in vector space optimization, we derive necessary and\nsufficient conditions for an optimal measurement that maximizes the probability\nof correct detection. We show that the previous optimal measurements that were\nderived for certain special cases satisfy these optimality conditions. We then\nconsider state sets with strong symmetry properties, and show that the optimal\nmeasurement operators for distinguishing between these states share the same\nsymmetries, and can be computed very efficiently by solving a reduced size\nsemidefinite program.",
    "arxiv_id": "quant-ph/0312061",
    "authors": [
      "Yonina C. Eldar",
      "Mihailo Stojnic",
      "Babak Hassibi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.69.062318",
    "title": "Optimal quantum detectors for unambiguous detection of mixed states",
    "url": "https://arxiv.org/abs/quant-ph/0312061"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4a4704a0-ad74-43a4-85a2-104051bcde42",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}