{
  "annotation_id": "33c8b618-4ae1-473b-ba2b-04d68961be25",
  "date_created": "2026-03-02T18:02:24.252000Z",
  "date_modified": "2026-03-02T18:02:24.252000Z",
  "file_hash": "217f0b7339901548889a56d1b1b7af36cab861cc6c671e9851c6a7c550aeced0",
  "private": false,
  "record": {
    "abstract": "Communicating classical information with a quantum system involves the\nreceiver making a measurement on the system so as to distinguish as well as\npossible the alphabet of states used by the sender. We consider the situation\nin which this measurement takes an appreciable time. In this case the\nmeasurement must be described by a continuous measurement process. We consider\na continuous implementation of the optimal measurement for distinguishing\nbetween two non-orthogonal states, and show that feedback control can be used\nduring this measurement to increase the rate at which the information regarding\nthe initial preparation is obtained. We show that while the maximum obtainable\nincrease is modest, the effect is purely quantum mechanical in the sense that\nthe enhancement is only possible when the initial states are non-orthogonal. We\nfind further that the enhancement in the rate of information gain is achieved\nat the expense of reducing the total information which the measurement can\nextract in the long-time limit.",
    "arxiv_id": "quant-ph/0601162",
    "authors": [
      "Kurt Jacobs"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Quantum Information \u0026 Computation 7, 127 (2007)",
    "title": "Feedback control for communication with non-orthogonal states",
    "url": "https://arxiv.org/abs/quant-ph/0601162"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1399c7c0-6f15-4977-854d-03f2d9cd3061",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}