{
  "annotation_id": "088392e2-f3f4-49cd-8bfe-6aa57c0d47e3",
  "date_created": "2026-03-02T18:02:27.501000Z",
  "date_modified": "2026-03-02T18:02:27.501000Z",
  "file_hash": "2dfc21be68d88148c6598b32223f3c77eb8edd45214468f3fb55aaa59a483d3a",
  "private": false,
  "record": {
    "abstract": "Transformations achievable by linear optical components allow to generate the\nwhole unitary group only when restricted to the one-photon subspace of a\nmultimode Fock space. In this paper, we address the more general problem of\nencoding quantum information by multiphoton states, and elaborating it via\nancillary extensions, linear optical passive devices and photodetection. Our\nscheme stems in a natural way from the mathematical structures underlying the\nphysics of linear optical passive devices. In particular, we analyze an\neconomical procedure for mapping a fiducial 2-photon 2-mode state into an\narbitrary 2-photon 2-mode state using ancillary resources and linear optical\npassive N-ports assisted by post-selection. We found that adding a single\nancilla mode is enough to generate any desired target state. The effect of\nimperfect photodetection in post-selection is considered and a simple trade-off\nbetween success probability and fidelity is derived.",
    "arxiv_id": "quant-ph/0606002",
    "authors": [
      "Paolo Aniello",
      "Cosmo Lupo",
      "Mario Napolitano",
      "Matteo G. A. Paris"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1140/epjd/e2006-00259-y",
    "journal_ref": "Eur.Phys.J. D41 (2007) 579-587",
    "title": "Engineering multiphoton states for linear optics computation",
    "url": "https://arxiv.org/abs/quant-ph/0606002"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "891b3895-f04c-4930-8578-2749df61cdbe",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}