{
  "annotation_id": "f9fd754c-78d9-4f81-8306-3ede700b5180",
  "date_created": "2026-03-02T18:02:17.213000Z",
  "date_modified": "2026-03-02T18:02:17.213000Z",
  "file_hash": "60ada43e69e3e66474ce309a02f112030e27d3624edff26c76d29c929809d4e6",
  "private": false,
  "record": {
    "abstract": "We study quantum state estimation problems where the reference system with\nrespect to which the state is measured should itself be treated quantum\nmechanically. In this situation, the difference between the system and the\nreference tends to fade. We investigate how the overlap between two pure\nquantum states can be optimally estimated, in several scenarios, and we\nre-visit homodyne detection.",
    "arxiv_id": "quant-ph/0507118",
    "authors": [
      "N. Gisin",
      "S. Iblisdir"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1140/epjd/e2006-00097-y",
    "journal_ref": "European Physical Journal D, 1-7, 2006",
    "title": "Quantum Relative States",
    "url": "https://arxiv.org/abs/quant-ph/0507118"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "944a5c93-92c3-4982-9450-321a5484e58d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}