{
  "annotation_id": "918b0a8f-dea3-40df-b948-30c87aaaf6f8",
  "date_created": "2026-03-02T18:01:48.540000Z",
  "date_modified": "2026-03-02T18:01:48.540000Z",
  "file_hash": "9007b3566f436e695d45fc1cfe20b7b16e601399f71c43b5cae3aad43fd7f393",
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  "record": {
    "abstract": "Fundamental phase-shift detection properties of optical multimode\ninterferometers are analyzed. Limits on perfectly distinguishable phase shifts\nare derived for general quantum states of a given average energy. In contrast\nto earlier work, the limits are found to be independent of the number of\ninterfering modes. However, the reported bounds are consistent with the\nHeisenberg limit. A short discussion on the concept of well-defined relative\nphase is also included.",
    "arxiv_id": "quant-ph/0204031",
    "authors": [
      "Jonas Soderholm",
      "Gunnar Bjork",
      "Bjorn Hessmo",
      "Shuichiro Inoue"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.67.053803",
    "journal_ref": "Phys.Rev.A67:053803,2003",
    "title": "Quantum limits on phase-shift detection using multimode interferometers",
    "url": "https://arxiv.org/abs/quant-ph/0204031"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ccf05fbd-c7d9-4a94-abdc-13e23ae932d2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}