{
  "annotation_id": "94a09e23-3b61-4763-9732-7ec7c52d4522",
  "date_created": "2026-03-02T18:01:56.066000Z",
  "date_modified": "2026-03-02T18:01:56.066000Z",
  "file_hash": "580ef046e45174492d5b758b6c4830357ae81796c68b38fd5accb58797deb2cd",
  "private": false,
  "record": {
    "abstract": "We present a theoretical study of an ensemble of X-like 4-level atoms placed\nin an optical cavity driven by a linearly polarized field. We show that the\nself-rotation (SR) process leads to polarization switching (PS). Below the PS\nthreshold, both the mean field mode and the orthogonal vacuum mode are\nsqueezed. We provide a simple analysis of the phenomena responsible for the\nsqueezing and trace the origin of vacuum squeezing not to SR, but to crossed\nKerr effect induced by the mean field. Last, we show that this vacuum squeezing\ncan be interpreted as polarization squeezing.",
    "arxiv_id": "quant-ph/0302142",
    "authors": [
      "V. Josse",
      "A. Dantan",
      "A. Bramati",
      "M. Pinard",
      "E. Giacobino"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1464-4266/5/4/358",
    "journal_ref": "J. Opt. B: Quantum Semiclass. Opt. 5 S513 (2003)",
    "title": "Polarization squeezing in a four-level system",
    "url": "https://arxiv.org/abs/quant-ph/0302142"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7a339ccf-7889-4c14-9ba8-73077197d662",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}