{
  "abstract": "We investigate how the exceptional-point structure of a dissipative cavity optomechanical system is inherited by experimentally accessible dynamical, spectral, and quantum-statistical observables. At optical-mechanical resonance, the effective non-Hermitian first-moment dynamics exhibits a second-order exceptional point, where two eigenvalues and their eigenvectors coalesce and the eigenvalue splitting follows the characteristic square-root dependence on perturbations. We show that the same square-root feature also governs transient photon and phonon populations, first-order coherence, spectral poles, and second-order intensity correlations. Below the exceptional point, the dynamics is non-oscillatory, whereas above it damped oscillations emerge together with frequency splitting of the spectral poles. At the exceptional point, the Jordan-block structure produces polynomial-exponential relaxation and a second-order spectral pole. Using the quantum regression theorem and Gaussian moment factorization, we further show that the stationary fluctuations satisfy the Siegert relation linking first- and second-order correlations. Although the zero-delay autocorrelations retain their thermal value, the finite-delay intensity correlations exhibit clear exceptional point signatures. This finding connects non-Hermitian mode coalescence with measurable dynamical and correlation observables in cavity optomechanics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.23382",
  "author_total": 4,
  "authors": [
    {
      "name": "Khazali Fahmi"
    },
    {
      "name": "Ahmad R. T. Nugraha"
    },
    {
      "name": "Ferry A. A. Nugraha"
    },
    {
      "name": "Adam B. Cahaya"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/26pz3v3vwsedc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.23382",
  "fulltext_url": null,
  "id": "26pz3v3vwsedc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.23382",
  "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",
      "3107|Quantum Mechanics and Non-Hermitian Physics"
    ]
  ],
  "openalex": "W7214042253",
  "pdf_url": "https://arxiv.org/pdf/2609.23382",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/26pz3v3vwsedc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.23382",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.23382"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Unified Spectral, Dynamical, and Correlation Signatures of an Exceptional Point in Cavity Optomechanics",
  "title_text": "Unified Spectral, Dynamical, and Correlation Signatures of an Exceptional Point in Cavity Optomechanics",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/26pz3v3vwsedc",
  "venue": "arXiv",
  "versions": []
}