{
  "annotation_id": "bbbf5d81-5b15-4704-a5c6-ec2a30a68b10",
  "date_created": "2026-03-02T18:02:20.648000Z",
  "date_modified": "2026-03-02T18:02:20.648000Z",
  "file_hash": "4b69ad3cd46a3c9e9839b42fad2dcad05b8afaaea8b69b5fd290a5eba046ed38",
  "private": false,
  "record": {
    "abstract": "We give a criterion to differentiate between dissipative and diffusive\nquantum operations. It is based on the classical idea that dissipative\nprocesses contract volumes in phase space. We define a quantity that can be\nregarded as ``quantum phase space contraction rate\u0027\u0027 and which is related to a\nfundamental property of quantum channels: non-unitality. We relate it to other\nproperties of the channel and also show a simple example of dissipative noise\ncomposed with a chaotic map. The emergence of attaractor-like structures is\ndisplayed.",
    "arxiv_id": "quant-ph/0508190",
    "authors": [
      "Ignacio Garcia-Mata",
      "Marcos Saraceno",
      "Maria Elena Spina",
      "Gabriel Carlo"
    ],
    "categories": [
      "quant-ph",
      "nlin.CD"
    ],
    "doi": "10.1103/PhysRevA.72.062315",
    "journal_ref": "Phys. Rev. A 72, 062315 (2005)",
    "title": "Phase space contraction and quantum operations",
    "url": "https://arxiv.org/abs/quant-ph/0508190"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "92a65d05-ad74-4a62-8ed5-632774d17f97",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}