{
  "annotation_id": "8aa5e3e4-34fb-4c6a-97f2-6a2c81bba702",
  "date_created": "2026-03-02T18:01:49.152000Z",
  "date_modified": "2026-03-02T18:01:49.152000Z",
  "file_hash": "99253749eaaf095e513adddffc07ce0ebeffa7e12d657c49464d9696f1888e73",
  "private": false,
  "record": {
    "abstract": "We investigate strategies for estimating a depolarizing channel for a finite\ndimensional system. Our analysis addresses the double optimization problem of\nselecting the best input probe state and the measurement strategy that\nminimizes the Bayes cost of a quadratic function. In the qubit case, we derive\nthe Bayes optimal strategy for any finite number of input probe particles when\nbipartite entanglement can be formed in the probe particles.",
    "arxiv_id": "quant-ph/0203113",
    "authors": [
      "Masahide Sasaki",
      "Masashi Ban",
      "Stephen M. Barnett"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.022308",
    "journal_ref": "Phys. Rev. A66, 022308 (2002).",
    "title": "Optimal parameter estimation of depolarizing channel",
    "url": "https://arxiv.org/abs/quant-ph/0203113"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fcf3eec3-fa93-4357-a93f-e00b2d16f0d3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}