{
  "annotation_id": "d73cce0b-e5bc-45bc-a568-f227b70a625b",
  "date_created": "2026-03-02T18:02:31.043000Z",
  "date_modified": "2026-03-02T18:02:31.043000Z",
  "file_hash": "0d5f9c31e020d2481178bde64046cdf6e9b7978d556e8dd851f9ed32ba9149ce",
  "private": false,
  "record": {
    "abstract": "In this paper we consider feedback control algorithms for the rapid\npurification of a bipartite state consisting of two qubits, when the observer\nhas access to only one of the qubits. We show 1) that the algorithm that\nmaximizes the average purification rate is not the same as that that for a\nsingle qubit, and 2) that it is always possible to construct an algorithm that\ngenerates a deterministic rate of purification for {\\em both} qubits. We also\nreveal a key difference between projective and continuous measurements with\nregard to state-purification.",
    "arxiv_id": "quant-ph/0610156",
    "authors": [
      "Charles D. Hill",
      "J. F. Ralph"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1367-2630/9/5/151",
    "title": "Weak measurement and rapid state reduction in bipartite quantum systems",
    "url": "https://arxiv.org/abs/quant-ph/0610156"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "30e929bf-b880-4018-9e2a-d3a0e261184f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}