{
  "abstract": "Exceptional points in non-Hermitian quantum systems give rise to genuine quantum phenomena. Recent explorations of exceptional-point-induced phase transitions have extended from discrete-variable to continuous-variable-encoded quantum systems. However, phase transitions driven by Liouvillian exceptional points (LEPs) in continuous-variable platforms remain largely unexplored. Here, we construct and investigate a Liouvillian exceptional structure based on a driven-dissipative Kerr-cat qubit. Through numerical simulations, we numerically reveal a non-Hermitian phase transition occurring at the LEP characterized by a sudden change in dynamical behavior from underdamped oscillations to overdamped relaxations as visualized via Wigner functions and Bloch sphere trajectories. The dynamical pattern of Wigner interference fringes provides a phase-space signature of the LEP-induced phase transition, while Wigner negativity certifies the genuine quantum nonclassicality of the system. Our results establish the Kerr-cat qubit as a continuous-variable setting for exploring dissipative quantum criticality and intrinsic non-Hermitian physics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "name": "Pei-Rong Han"
    },
    {
      "name": "Tian-Le Yang"
    },
    {
      "name": "Wen Ning"
    },
    {
      "name": "Hao-Long Zhang"
    },
    {
      "name": "Huifang Kang"
    },
    {
      "name": "Huiye Qiu",
      "orcid": "0000-0002-0780-586X"
    },
    {
      "name": "Zhen-Biao Yang",
      "orcid": "0000-0002-3964-4714"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3s58wb4exkme4.bib",
  "cited_by": 0,
  "doi": "10.1038/s42005-026-02919-7",
  "fulltext_url": null,
  "id": "3s58wb4exkme4",
  "issns": [
    "2399-3650"
  ],
  "landing_url": "https://www.nature.com/articles/s42005-026-02919-7",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3107|Quantum Mechanics and Non-Hermitian Physics"
    ]
  ],
  "openalex": "W7221894255",
  "pdf_url": "https://www.nature.com/articles/s42005-026-02919-7_reference.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/3s58wb4exkme4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:52Z",
      "native_id": "10.1038/s42005-026-02919-7",
      "source": "crossref",
      "url": "https://www.nature.com/articles/s42005-026-02919-7"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3107|Quantum Mechanics and Non-Hermitian Physics",
      "subfield": "amo"
    }
  ],
  "title": "Liouvillian exceptional-point-induced phase transition in a single Kerr-cat qubit",
  "title_text": "Liouvillian exceptional-point-induced phase transition in a single Kerr-cat qubit",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:52Z",
  "url": "https://research.draconitic.com/paper/3s58wb4exkme4",
  "venue": "Communications Physics",
  "versions": []
}