{
  "abstract": "We study deep variational circuits for a periodic Heisenberg chain under local gate depolarization, at depths where noiseless training is coherently exact. Full-width initializations reach low coherent error faster than circuits with confined transverse generators, but incur a larger noise shift and need an order of magnitude more updates for noisy convergence. In many-body-localization-inspired initialization, bounding the initial transverse generator amplitudes keeps the operator support localized and suffices for low-fragility optimization, so longitudinal disorder and Floquet layer repetition are unnecessary. The fault-erasure fraction, the mean fraction of coherent energy removed per fault, sets the effective visibility through a parameter-free exponential model. Full-width circuits start with delocalized operator support, and once coherent energy builds up, each fault erases nearly all of it. Initially, their noise-induced gradient almost uniformly attenuates the coherent gradient, so coherent descent proceeds at the noiseless rate. They then stall on a high-noise force-balance plateau, where finite coherent and noise-induced gradients cancel to first order. At late times all initializations reach the same fault-erasure fraction and noisy-error band, but operator support contracts more slowly, at a rate set by the plateau residence time.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.04198",
  "author_total": 3,
  "authors": [
    {
      "name": "Longhui Shen"
    },
    {
      "name": "Fangzhou Jin"
    },
    {
      "name": "Bin Guo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ahvspyx33yq4m.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.04198",
  "fulltext_url": null,
  "id": "ahvspyx33yq4m",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.04198",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.04198",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ahvspyx33yq4m.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T15:21:25Z",
      "native_id": "2611.04198",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.04198"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Initialization-controlled fault sensitivity and force-balance plateaus in noisy variational quantum optimization",
  "title_text": "Initialization-controlled fault sensitivity and force-balance plateaus in noisy variational quantum optimization",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:01Z",
  "url": "https://research.draconitic.com/paper/ahvspyx33yq4m",
  "venue": "arXiv",
  "versions": []
}