{
  "abstract": "Dynamical protection via strong driving can enable resilient quantum processing on imperfect physical hardware. However, the practical utility of such schemes is frequently limited by parasitic processes such as drive-induced dephasing and leakage. Here, we demonstrate that sub-GHz charge driving of superconducting Kerr oscillators (KOs) in the transmon regime circumvents this trade-off, simultaneously activating fast parametric interactions and protecting the encoded qubit from low-frequency noise. The key is the frequency dependence of the charge sensitivity: using the AC Stark shift as a probe, we find that the KO frequency sensitivity to a charge drive grows quadratically with both drive frequency and amplitude, making the oscillator weakly sensitive to $1/f$ charge noise yet strongly coupled to drives near 1~GHz. Exploiting this, we first demonstrate cooling and reset of the KO in 82~ns, to a residual population below $0.7\\%$---lower than its $2.5\\%$ steady-state thermal population. Next, using two KOs, we demonstrate logical control and dynamical protection of a dual-rail qubit with nearly fourfold erasure bias. Finally, using a single end-of-circuit erasure check, we achieve an error per Clifford of $5.6\\times10^{-4}$, which falls to $1.5\\times10^{-4}$ after post-selection, with 25~ns gates.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10432",
  "author_total": 9,
  "authors": [
    {
      "name": "Ahmed Hajr"
    },
    {
      "name": "Ke Wang"
    },
    {
      "name": "Bingcheng Qing"
    },
    {
      "name": "Akel Hashim"
    },
    {
      "name": "Bibek Bhandari"
    },
    {
      "name": "Dominic Briseño-Colunga"
    },
    {
      "name": "Justin Dressel"
    },
    {
      "name": "Andrew N. Jordan"
    },
    {
      "name": "Irfan Siddiqi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3x4m5k9am6ck5.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10432",
  "fulltext_url": null,
  "id": "3x4m5k9am6ck5",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.10432",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7221025531",
  "pdf_url": "https://arxiv.org/pdf/2610.10432",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3x4m5k9am6ck5.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:37Z",
      "native_id": "2610.10432",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10432"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Dynamically protected erasure qubit via low-frequency charge driving",
  "title_text": "Dynamically protected erasure qubit via low-frequency charge driving",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:37Z",
  "url": "https://research.draconitic.com/paper/3x4m5k9am6ck5",
  "venue": "arXiv",
  "versions": []
}