{
  "annotation_id": "43157fee-d35d-45da-9589-82a019d90949",
  "date_created": "2026-03-02T18:02:44.961000Z",
  "date_modified": "2026-03-02T18:02:44.961000Z",
  "file_hash": "775f66246852ca6da76aff9092c29a6b02be55169c0d97bc91fcc72852918dbe",
  "private": false,
  "record": {
    "abstract": "We study the entanglement between the two beams exiting a Mach-Zehnder\ninterferometer fed by a couple of squeezed-coherent states with arbitrary\nsqueezing parameter. The quantum correlations at the output are function of the\ninternal phase-shift of the interferometer, with the output state ranging from\na totally disentangled state to a state whose degree of entanglement is an\nincreasing function of the input squeezing parameter. A couple of squeezed\nvacuum at the input leads to maximum entangled state at the output. The fringes\nvisibilities resulting from measuring the coincidence counting rate or the\nsquared difference photocurrent are evaluated and compared each other.\nHomodyne-like detection turns out to be preferable in almost all situations,\nwith the exception of the very low signals regime.",
    "arxiv_id": "quant-ph/9811078",
    "authors": [
      "Matteo G. A. Paris"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.59.1615",
    "journal_ref": "Phys.Rev. A59 (1999) 1615",
    "title": "Entanglement and visibility at the output of a Mach-Zehnder   interferometer",
    "url": "https://arxiv.org/abs/quant-ph/9811078"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9de12874-fd47-4f22-a5e8-bcd876f63c4a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}