{
  "abstract": "We study the infinite-dimensional Lindblad generator $L_ε=D[a^2-α^2]+εD[a]$, describing a dissipative cat qubit subject to single-photon loss. For sufficiently large $α$ and sufficiently small $ε>0$, we identify a two-dimensional spectral subspace near zero and establish an upper bound on the slow decay rate that decreases exponentially with $α^2$, uniformly in $ε$. This proves exponential suppression of bit-flip errors.",
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  "article_type": null,
  "arxiv": "2611.01296",
  "author_total": 2,
  "authors": [
    {
      "name": "Ruikang Liang"
    },
    {
      "name": "Rémi Robin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/an5gf109gfexa.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.01296",
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  "id": "an5gf109gfexa",
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  "pdf_url": "https://hal.science/hal-05840838/document",
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  "published": "2026-10-27",
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  "ris": "https://research.draconitic.com/paper/an5gf109gfexa.ris",
  "sources": [
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      "first_seen": "2026-10-30T12:18:02Z",
      "native_id": "hal-05840838",
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      "native_id": "2611.01296",
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      "origin": "arxiv:math-ph",
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    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
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  "title": "Exponential suppression of bit-flip errors in dissipative cat qubits",
  "title_text": "Exponential suppression of bit-flip errors in dissipative cat qubits",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:22Z",
  "url": "https://research.draconitic.com/paper/an5gf109gfexa",
  "venue": "HAL",
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