{
  "abstract": "A flat-top transmon pulse with cosine ramps has exact spectral zeros at half-integer values of ramp duration times anharmonicity, (τ|α|=n+1/2), which predict endpoint-leakage minima in the weak-drive regime. For any self-similar one-scale envelope (Ω(t)=Ω_0 f(t/σ)), the non-adiabaticity parameter is exactly degenerate with pulse area, (η_{\\rm ref}θ=C_{\\rm shape}); an independent ramp timescale (τ) is therefore required. The Fourier amplitude of the resulting envelope at the anharmonicity vanishes at (τ|α|=n+1/2) through destructive interference between the rising and falling edges, independently of plateau length and total pulse duration. Dynamically, the endpoint-leakage amplitude is perturbatively determined by the Fourier component of the envelope weighted by the instantaneous excited-state amplitude. This weighting removes a second, plateau-derived family of envelope zeros not followed by the dynamics. Four-level Duffing simulations using parameters representative of IBM Heron r2 devices collapse the minima onto the half-integer sequence for six pulse durations from 50 to 100 ns, with an RMS deviation of 0.034 in (τ|α|). For four durations resolved on a finer grid, first-order population weighting reduces the positional deviation from 0.0234 to 0.0096. The competing plateau condition does not collapse the data. The residual weak-drive displacement from the half-integers is captured by the population-weighted correction.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Next Materials, 13 (2026) 103674",
  "arxiv": "2605.10578",
  "author_total": 1,
  "authors": [
    {
      "name": "A. M. Tishin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9zhzfvenbhav9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.10578",
  "fulltext_url": null,
  "id": "9zhzfvenbhav9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.10578",
  "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",
      "cond-mat.mes-hall"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.10578",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9zhzfvenbhav9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:31Z",
      "native_id": "2605.10578",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.10578"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Half-Integer Spectral Zeros for Leakage Suppression in Fast Transmon Pulses",
  "title_text": "Half-Integer Spectral Zeros for Leakage Suppression in Fast Transmon Pulses",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:31Z",
  "url": "https://research.draconitic.com/paper/9zhzfvenbhav9",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1016/j.nxmate.2026.103674",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}