{
  "annotation_id": "c479a5fa-4545-4cad-84f8-1fd60697ec73",
  "date_created": "2026-03-02T18:02:22.884000Z",
  "date_modified": "2026-03-02T18:02:22.884000Z",
  "file_hash": "5accb9bb769683ac5f6626bcf13b01c8e67803ea7dea3c133b392cba7f5c1912",
  "private": false,
  "record": {
    "abstract": "We demonstrate phase super-resolution in the absence of entangled states. The\nkey insight is to use the inherent time-reversal symmetry of quantum mechanics:\nour theory shows that it is possible to \\emph{measure}, as opposed to prepare,\nentangled states. Our approach is robust, requiring only photons that exhibit\nclassical interference: we experimentally demonstrate high-visibility phase\nsuper-resolution with three, four, and six photons using a standard laser and\nphoton counters. Our six-photon experiment demonstrates the best phase\nsuper-resolution yet reported with high visibility and resolution.",
    "arxiv_id": "quant-ph/0511214",
    "authors": [
      "K. J. Resch",
      "K. L. Pregnell",
      "R. Prevedel",
      "A. Gilchrist",
      "G. J. Pryde",
      "J. L. O\u0027Brien",
      "A. G. White"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.98.223601",
    "journal_ref": "Phys.Rev.Lett.98:223601,2007",
    "title": "Time-reversal and super-resolving phase measurements",
    "url": "https://arxiv.org/abs/quant-ph/0511214"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9ea800e4-f000-4a12-bccf-e276880376c6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}