{
  "annotation_id": "9606c65c-1c6b-43b6-b181-6a01c3841fdf",
  "date_created": "2026-03-02T18:02:31.104000Z",
  "date_modified": "2026-03-02T18:02:31.104000Z",
  "file_hash": "9947df00b56eb863c5fc414a47804949d78b8a3a66703099b47ba862d1f98d4f",
  "private": false,
  "record": {
    "abstract": "Synthesizing an effective identity evolution in a target system subjected to\nunwanted unitary or non-unitary dynamics is a fundamental task for both quantum\ncontrol and quantum information processing applications. Here, we investigate\nhow single-bit, discrete-time feedback capabilities may be exploited to enact\nor to enhance quantum procedures for effectively suppressing unwanted dynamics\nin a finite-dimensional open quantum system. An explicit characterization of\nthe joint unitary propagators correctable by a single-bit feedback strategy for\narbitrary evolution time is obtained. For a two-dimensional target system, we\nshow how by appropriately combining quantum feedback with dynamical decoupling\nmethods, concatenated feedback-decoupling schemes may be built, which can\noperate under relaxed control assumptions and can outperform purely closed-loop\nand open-loop protocols.",
    "arxiv_id": "quant-ph/0609165",
    "authors": [
      "Francesco Ticozzi",
      "Lorenza Viola"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.052328",
    "journal_ref": "Physical Review A 74, 052328, 2006",
    "title": "Single-bit Feedback and Quantum Dynamical Decoupling",
    "url": "https://arxiv.org/abs/quant-ph/0609165"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3a97d419-ed83-467b-97a7-8dd72f02c731",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}