{
  "annotation_id": "bd400502-5cc0-4bd6-914b-8af013e98cb3",
  "date_created": "2026-03-02T18:01:52.871000Z",
  "date_modified": "2026-03-02T18:01:52.871000Z",
  "file_hash": "ee18f68e079f33ac6343e0839edf4900b60b2c76c5fa64e331b29ca11d857b1a",
  "private": false,
  "record": {
    "abstract": "We study the role of continuous measurement in the quantum to classical\ntransition for a system with coupled internal (spin) and external (motional)\ndegrees of freedom. Even when the measured motional degree of freedom can be\ntreated classically, entanglement between spin and motion causes strong\nmeasurement backaction on the quantum spin subsystem so that classical\ntrajectories are not recovered in this mixed quantum-classical regime. The\nmeasurement can extract localized quantum trajectories that behave classically\nonly when the internal action also becomes large relative to h-bar.",
    "arxiv_id": "quant-ph/0208064",
    "authors": [
      "Shohini Ghose",
      "Paul M. Alsing",
      "Ivan H. Deutsch",
      "Tanmoy Bhattacharya",
      "Salman Habib",
      "Kurt Jacobs"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.67.052102",
    "journal_ref": "PRA 67, 052102, (2003)",
    "title": "Recovering classical dynamics from coupled quantum systems through   continuous measurement",
    "url": "https://arxiv.org/abs/quant-ph/0208064"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3d211610-a365-45ed-8444-641ce5d87190",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}