{
  "annotation_id": "11835d33-7402-411f-b876-9c494e41025f",
  "date_created": "2026-03-02T18:01:59.538000Z",
  "date_modified": "2026-03-02T18:01:59.538000Z",
  "file_hash": "52f1a87c574cb69109c2268cdec9b357da64bc8ca6b589a7ebc2263f8887137e",
  "private": false,
  "record": {
    "abstract": "Based on total variance of a pair of Einstein-Podolsky-Rosen (EPR) type\noperators, the generalized EPR entangled states in continuous variable systems\nare defined. We show that such entangled states must correspond with two-mode\nsqueezing states whether these states are Gaussian or not and whether they are\npure or not. With help of the relation between the total variance and the\nentanglement, the degree of such entanglement is also defined. Through\nanalyzing some specific cases, we see that this method is very convenient and\neasy in practical application. In addition, an entangled state with no\nsqueezing is studied, which reveals that there certainly exist something\nunknown about entanglement in continuous variable systems.",
    "arxiv_id": "quant-ph/0307194",
    "authors": [
      "Yun-Jie Xia",
      "Guang-Can Guo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0256-307X/21/10/003",
    "title": "Squeezing and entanglement in continous variable systems",
    "url": "https://arxiv.org/abs/quant-ph/0307194"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "42a7e5cd-28df-4cd8-b0d9-317c52a468b7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}