{
  "annotation_id": "33dab6a6-781e-4c68-b9e3-02aad36d8db2",
  "date_created": "2026-03-02T18:02:27.612000Z",
  "date_modified": "2026-03-02T18:02:27.612000Z",
  "file_hash": "80794e85094a73a92a3fe4ab97c4a1837def9d17dac768316d0c817feea540fb",
  "private": false,
  "record": {
    "abstract": "We extend the concept of probabilistic unambiguous discrimination of quantum\nstates to quantum state estimation. We consider a scenario where the\nmeasurement device can output either an estimate of the unknown input state or\nan inconclusive result. We present a general method how to evaluate the maximum\nfidelity achievable by the probabilistic estimation strategy. We illustrate our\nmethod on two explicit examples: estimation of a qudit from a pair of conjugate\nqudits and phase covariant estimation of a qubit from N copies. We show that by\nallowing for inconclusive results it is possible to reach estimation fidelity\nhigher than that achievable by the best deterministic estimation strategy.",
    "arxiv_id": "quant-ph/0606156",
    "authors": [
      "Jaromir Fiurasek"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1367-2630/8/9/192",
    "journal_ref": "New J. Phys. 8, 192 (2006).",
    "title": "Optimal probabilistic estimation of quantum states",
    "url": "https://arxiv.org/abs/quant-ph/0606156"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2b94ea87-d1e2-4b27-991c-8bd0c2a6d7b5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}