{
  "annotation_id": "dfd56a89-e923-4d50-855c-da63d6509a2f",
  "date_created": "2026-03-02T18:02:10.241000Z",
  "date_modified": "2026-03-02T18:02:10.241000Z",
  "file_hash": "e14b255968d2036837684e76b3dd227c00254948897b462692cedece8b7b9d40",
  "private": false,
  "record": {
    "abstract": "For quantum systems with linear dynamics in phase space much of classical\nfeedback control theory applies. However, there are some questions that are\nsensible only for the quantum case, such as: given a fixed interaction between\nthe system and the environment what is the optimal measurement on the\nenvironment for a particular control problem? We show that for a broad class of\noptimal (state-based) control problems (the stationary\nLinear-Quadratic-Gaussian class), this question is a semi-definite program.\nMoreover, the answer also applies to Markovian (current-based) feedback.",
    "arxiv_id": "quant-ph/0408099",
    "authors": [
      "H. M . Wiseman",
      "A. C. Doherty"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.94.070405",
    "journal_ref": "Phys. Rev. Lett., 94, 070405 (2005)",
    "title": "Optimal Unravellings for Feedback Control in Linear Quantum Systems",
    "url": "https://arxiv.org/abs/quant-ph/0408099"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8ff47ed4-8fca-4115-9375-82dde0d29c23",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}