{
  "annotation_id": "adf98d0e-cfc4-4e17-add8-6a03119cdecb",
  "date_created": "2026-03-02T18:02:41.547000Z",
  "date_modified": "2026-03-02T18:02:41.547000Z",
  "file_hash": "b430547c0c0ce567dd9addd91a418bcd4d3a2334e6aafe912202cd048ca9588e",
  "private": false,
  "record": {
    "abstract": "We show the equivalence between two different communication schemes that\nemploy a couple of modes of the electromagnetic field. One scheme uses\nunconventional heterodyne detection, with correlated signal and image-band\nmodes in a twin-beam state from parametric downconversion. The other scheme is\nrealized through a complex-number coding over quadrature-squeezed states of two\nuncorrelated modes, each detected by ordinary homodyning. This equivalence\nconcerns all the stages of the communication channel: the encoded state, the\noptimal amplifier for the channel, the master equation modeling the loss, and\nthe output measurement scheme. The unitary transformation that connects the two\ncommunication schemes is realized by a frequency conversion device.",
    "arxiv_id": "quant-ph/9704033",
    "authors": [
      "Giacomo Mauro D\u0027Ariano",
      "Massimiliano Sacchi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1142/S0217984997001511",
    "journal_ref": "Modern Phys. Lett. B11, 1263 (1997).",
    "title": "Equivalence between squeezed-state and twin-beam communication channels",
    "url": "https://arxiv.org/abs/quant-ph/9704033"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9906ffef-0fff-4c8d-a4a1-4fef83d239e8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}