{
  "abstract": "The motional modes of trapped ions are promising candidates for continuous-variable (CV) quantum computation and simulation. However, to achieve a universal gate set for CV quantum computation, anharmonic nonlinear unitaries are required. Here, we experimentally demonstrate a protocol that allows us to approximate the cubic phase gate. By numerically optimizing the phase angles and amplitudes of a set of state-dependent force pulses, we demonstrate the cubic phase gate for both vacuum and low-$α$ coherent state inputs and verify its performance. Our protocol can also be extended to approximate other nonlinear unitaries.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.34774",
  "author_total": 4,
  "authors": [
    {
      "name": "Nigel Benjamin Lee Junsheng"
    },
    {
      "name": "Eugene Koh Jun Wei"
    },
    {
      "name": "Mu Young Kim"
    },
    {
      "name": "Dzmitry Matsukevich"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bzzpwe6vm6c3d.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.34774",
  "fulltext_url": null,
  "id": "bzzpwe6vm6c3d",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.34774",
  "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",
      "physics.atom-ph"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7214778718",
  "pdf_url": "https://arxiv.org/pdf/2609.34774",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bzzpwe6vm6c3d.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.34774",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.34774"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.atom-ph",
      "subfield": "amo"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Cubic Phase Gate with a Trapped Ion Oscillator",
  "title_text": "Cubic Phase Gate with a Trapped Ion Oscillator",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/bzzpwe6vm6c3d",
  "venue": "arXiv",
  "versions": []
}