{
  "annotation_id": "5a726fb7-23e9-4383-9304-1480b2c4cd5c",
  "date_created": "2026-03-02T18:02:19.833000Z",
  "date_modified": "2026-03-02T18:02:19.833000Z",
  "file_hash": "e6867014172a77e0bed82b1c1c5d9fe29709922c77da148b5f661ed536a4cb20",
  "private": false,
  "record": {
    "abstract": "We study multi-qubit quantum channels that can be represented as a product of\none-mode fermionic attenuation channels. An explicit formula for the classical\ncapacity $C_1$ and for the minimum output entropy $S_{min}$ of these channels\nis proposed. We compute $S_{min}$ analytically for any number of qubits under\nassumption that the minimum is achieved on a Gaussian input. Apart from that, a\nsimple numerical method for evaluating $S_{min}$ is developed. The method is\napplicable to any channels that are sufficiently noisy. For fermionic product\nchannels the proposed formula for $S_{min}$ agrees with the numerical results\nwith a precision about $10^{-9}$.",
    "arxiv_id": "quant-ph/0507282",
    "authors": [
      "Sergey Bravyi"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Classical capacity of fermionic product channels",
    "url": "https://arxiv.org/abs/quant-ph/0507282"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "75fc1272-b6d8-4856-b366-57bd18ea760c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}