{
  "annotation_id": "52d5f8dc-0844-445c-bcdd-f6cff66be638",
  "date_created": "2026-03-02T18:02:34.233000Z",
  "date_modified": "2026-03-02T18:02:34.233000Z",
  "file_hash": "a685111addb272a3a51914709bfd41cb7afa890b03e29de29da32fd2727f1695",
  "private": false,
  "record": {
    "abstract": "We study a Mach-Zehnder interferometer fed by a coherent state in one input\nport and vacuum in the other. We explore a Bayesian phase estimation strategy\nto demonstrate that it is possible to achieve the standard quantum limit\nindependently from the true value of the phase shift and specific assumptions\non the noise of the interferometer. We have been able to implement the protocol\nusing parallel operation of two photon-number-resolving detectors and\nmultiphoton coincidence logic electronics at the output ports of a\nweakly-illuminated Mach-Zehnder interferometer. This protocol is unbiased and\nsaturates the Cramer-Rao phase uncertainty bound and, therefore, is an optimal\nphase estimation strategy.",
    "arxiv_id": "quant-ph/0701158",
    "authors": [
      "L. Pezze",
      "A. Smerzi",
      "G. Khoury",
      "J. F. Hodelin",
      "D. Bouwmeester"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.other",
      "cond-mat.stat-mech"
    ],
    "doi": "10.1103/PhysRevLett.99.223602",
    "title": "Phase detection at the quantum limit with multi-photon Mach-Zehnder   interferometry",
    "url": "https://arxiv.org/abs/quant-ph/0701158"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f091dd4e-d9e6-4663-a7aa-f1922a345685",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}