{
  "annotation_id": "5c8c6d24-2c05-4194-81ba-9f88a9a465ae",
  "date_created": "2026-03-02T18:02:02.270000Z",
  "date_modified": "2026-03-02T18:02:02.270000Z",
  "file_hash": "bb5b8bcec52a600bd90d3e84cc01564f41e9c26317cbc294a72f1992d299ba33",
  "private": false,
  "record": {
    "abstract": "We have realized the nonlinear sign shift (NS) operation for photonic\nqubits.This operation shifts the phase of two photons reflected by a beam\nsplitter using an extra single photon and measurement. We show that the\nconditional phase shift is $(1.05\\pm 0.06) \\pi $ in clear agreement with\ntheory. Our results show that by using an ancilla photon and conditional\ndetection, nonlinear optical effects can be implemented using only linear\noptical elements. This experiment represents an essential step for linear\noptical implementations of scalable quantum computation.",
    "arxiv_id": "quant-ph/0308134",
    "authors": [
      "Kaoru Sanaka",
      "Thomas Jennewein",
      "Jian-Wei Pan",
      "Kevin Resch",
      "Anton Zeilinger"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.92.017902",
    "journal_ref": "Phys. Rev. Lett. 92, 017902 (2004)",
    "title": "Experimental nonlinear sign shift for linear optics quantum computation",
    "url": "https://arxiv.org/abs/quant-ph/0308134"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cf598aed-3977-4d34-8817-be7c3333d13d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}