{
  "annotation_id": "88193db9-92e8-43b2-8f82-17d6d91a23a0",
  "date_created": "2026-03-02T18:02:27.716000Z",
  "date_modified": "2026-03-02T18:02:27.716000Z",
  "file_hash": "c678086a21d9ba02c06d7018b9c8a3956f16efff1960932a1a09e9ed7eccce99",
  "private": false,
  "record": {
    "abstract": "A scheme for optimal and deterministic linear optical purification of mixed\nsqueezed Gaussian states is proposed and experimentally demonstrated. The\nscheme requires only linear optical elements and homodyne detectors, and allows\nthe balance between purification efficacy and squeezing degradation to be\ncontrolled. One particular choice of parameters gave a ten-fold reduction of\nthe thermal noise with a corresponding squeezing degradation of only 11%. We\nprove optimality of the protocol, and show that it can be used to enhance the\nperformance of quantum informational protocols such as dense coding and\nentanglement generation.",
    "arxiv_id": "quant-ph/0607080",
    "authors": [
      "O. Gl\u00f6ckl",
      "U. L. Andersen",
      "R. Filip",
      "W. P. Bowen",
      "G. Leuchs"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.97.053601",
    "journal_ref": "Phys. Rev. Lett. 97, 053601 (2006)",
    "title": "Squeezed state purification with linear optics and feed forward",
    "url": "https://arxiv.org/abs/quant-ph/0607080"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bccc0860-1f3e-48d2-ab07-45fa797f8d81",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}