{
  "annotation_id": "198fe763-eeec-45b7-9e14-537b4c6bdaa4",
  "date_created": "2026-03-02T18:01:59.481000Z",
  "date_modified": "2026-03-02T18:01:59.481000Z",
  "file_hash": "daefcba332f7d0c8e915d343d9e9a9a80d4f3fc7edca6682101646ed46f5139f",
  "private": false,
  "record": {
    "abstract": "Linear optical networks are devices that turn classical incident modes by a\nlinear transformation into outgoing ones. In general, the quantum version of\nsuch transformations may mix annihilation and creation operators. We derive a\nsimple formula for the effective Hamiltonian of a general linear quantum\nnetwork, if such a Hamiltonian exists. Otherwise we show how the scattering\nmatrix of the network is decomposed into a product of three matrices that can\nbe generated by Hamiltonians.",
    "arxiv_id": "quant-ph/0306123",
    "authors": [
      "U. Leonhardt",
      "A. Neumaier"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1464-4266/6/1/L01",
    "journal_ref": "Journal of Optics B 6, L1 (2003)",
    "title": "Explicit effective Hamiltonians for general linear quantum-optical   networks",
    "url": "https://arxiv.org/abs/quant-ph/0306123"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cf5a706d-391c-4dc4-ac03-fa1a08f4c62e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}