{
  "annotation_id": "03732d95-681f-4a43-9b35-1077ce207052",
  "date_created": "2026-03-02T18:02:10.329000Z",
  "date_modified": "2026-03-02T18:02:10.329000Z",
  "file_hash": "c1f08fbbbcb69d040da2a41bc1e8ce32ebcd34c75d2ec4330588be828b262ec2",
  "private": false,
  "record": {
    "abstract": "We consider the use of feedback control during a measurement to increase the\nrate at which a single qubit is purified, and more generally the rate at which\nnear-pure states may be prepared. We derive the optimal bang-bang algorithm for\nrapid state preparation from an initially completely mixed state when the\nmeasurement basis is unrestricted, and evaluate its performance numerically. We\nalso consider briefly the case in which the measurement basis is fixed with\nrespect to the state to be prepared, and describe the qualitative structure of\nthe optimal bang-bang algorithm.",
    "arxiv_id": "quant-ph/0410018",
    "authors": [
      "Kurt Jacobs"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1117/12.547012",
    "journal_ref": "Proc. of SPIE 5468, 355 (2004)",
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Optimal feedback control for the rapid preparation of a single qubit",
    "url": "https://arxiv.org/abs/quant-ph/0410018"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "17a327f8-5765-42f3-bd4a-213d0fef9971",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}