{
  "annotation_id": "21c347e8-4c01-4155-8b60-c71c511ae88f",
  "date_created": "2026-03-02T18:02:10.112000Z",
  "date_modified": "2026-03-02T18:02:10.112000Z",
  "file_hash": "559808c064d7385bc8d4533fa271bb65fc1fe9e6c173310acec5b0f6765f44ff",
  "private": false,
  "record": {
    "abstract": "We study a protocol for two-qubit state guidance that does not rely on\nfeedback mechanisms. In our scheme, entanglement can be concentrated by\narranging the interactions of the qubits with a continuous variable ancilla. By\nproperly post-selecting the outcomes of repeated measurements of the state of\nthe ancilla, the qubit state is driven to have a desired amount of purity and\nentanglement. We stress the primary role played by the first iterations of the\nprotocol. Inefficiencies in the detection operations can be fully taken into\naccount.",
    "arxiv_id": "quant-ph/0410026",
    "authors": [
      "Mauro Paternostro",
      "M. S. Kim"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1367-2630/7/1/043",
    "journal_ref": "New J. Phys. 7, 43 (2005).",
    "title": "Qubit state guidance without feedback",
    "url": "https://arxiv.org/abs/quant-ph/0410026"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "126d65f2-910c-4b39-a02f-5e966f24675d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}