{
  "annotation_id": "49c7c7af-2ffc-47db-8a67-f35955239d86",
  "date_created": "2026-03-02T18:01:45.902000Z",
  "date_modified": "2026-03-02T18:01:45.902000Z",
  "file_hash": "3fe83c271a6b37912497b6667d9904c5d8f8e783cca2011ac414e48ddc3aca40",
  "private": false,
  "record": {
    "abstract": "A generic model of measurement device which is able to directly measure\ncommonly used quantum-state characteristics such as fidelity, overlap, purity\nand Hilbert-Schmidt distance for two general uncorrelated mixed states is\nproposed. In addition, for two correlated mixed states, the measurement\nrealizes an entanglement witness for Werner\u0027s separability criterion. To\ndetermine these observables, the estimation only one parameter - the visibility\nof interference, is needed. The implementations in cavity QED, trapped ion and\nelectromagnetically induced transparency experiments are discussed.",
    "arxiv_id": "quant-ph/0108119",
    "authors": [
      "Radim Filip"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.65.062320",
    "journal_ref": "Phys. Rev. A 65, 062320 (2002)",
    "title": "A device for feasible fidelity, purity, Hilbert-Schmidt distance and   entanglement witness measurements",
    "url": "https://arxiv.org/abs/quant-ph/0108119"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "817c8841-d7f5-4d9b-a4f8-e2c14888d3fe",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}