{
  "annotation_id": "55528064-5051-429a-b81c-72a1460afb9e",
  "date_created": "2026-03-02T18:02:02.804000Z",
  "date_modified": "2026-03-02T18:02:02.804000Z",
  "file_hash": "ba912431e231d02e4fd731ff68beb63c2e74610849600ded36d3e36d12a64d4c",
  "private": false,
  "record": {
    "abstract": "We analyze the nonlinear optical response of a four-level atomic system\ndriven into a tripod configuration. The large cross-Kerr nonlinearities that\noccurr in such a system are shown to produce nonlinear phase shift of order\n$\\pi$. Such a substantial shift may be observed in a cold atomic gas in a\nmagneto-optical trap where it coupl be fasibly exploited towards the\nrealization of a polarization quantum phase gate. The experimental feasibility\nof such a gate is here examined in detail.",
    "arxiv_id": "quant-ph/0310148",
    "authors": [
      "S. Rebic",
      "D. Vitali",
      "C. Ottaviani",
      "P. Tombesi",
      "M. Artoni",
      "F. Cataliotti",
      "R. Corbalan"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.70.032317",
    "title": "Polarization phase gate with a tripod atomic system",
    "url": "https://arxiv.org/abs/quant-ph/0310148"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fb04c6bf-e730-47bb-80ac-98b03716e558",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}