{
  "annotation_id": "b6ab27e1-9074-443a-9ffb-f86fa96c5cd9",
  "date_created": "2026-03-02T18:02:23.675000Z",
  "date_modified": "2026-03-02T18:02:23.675000Z",
  "file_hash": "4f677473170ebf8491b1f773a90a067e523034261f0e53398ceaf5889a42763f",
  "private": false,
  "record": {
    "abstract": "Feedback control is expected to considerably protect quantum states against\ndecoherence caused by interaction between the system and environment.\nEspecially, Markovian feedback scheme developed by Wiseman can modify the\nproperties of decoherence and eventually recover the purity of the steadystate\nof the corresponding master equation. This paper provides a condition for which\nthe modified master equation has a pure steady state. By applying this\ncondition to a two-qubit system, we obtain a complete parametrization of the\nfeedback Hamiltonian such that the steady state becomes a maximally entangled\nstate.",
    "arxiv_id": "quant-ph/0603040",
    "authors": [
      "Naoki Yamamoto"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.024104",
    "journal_ref": "Physical Review A 72, 024104 (2005)",
    "title": "Parametrization of the feedback Hamiltonian realizing a pure steady   state",
    "url": "https://arxiv.org/abs/quant-ph/0603040"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "43c63496-2c32-4560-b81f-4bb1ab3dc6b8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}