{
  "abstract": "We theoretically investigate quantum Rabi oscillations in a system consisting of a two-level atom (qubit) strongly coupled to a one-dimensional open waveguide. In contrast to conventional cavity quantum electrodynamics, the qubit interacts with a continuum of propagating modes, which gives rise to fundamentally different dynamical behavior. Within the rotating-wave approximation, we express the multimode Jaynes-Cummings Hamiltonian in terms of collective bosonic operators and show that the system possesses two integrals of motion, enabling an exact diagonalization of the Hamiltonian in the single-excitation subspace. We show that for a strongly interacting qubit-photon system, the dynamics are captured by a reduced two-level model. In this framework, each level is defined as the product of the atomic excited state and a specific field mode, which takes the form of a multiphoton Fock-like state. In this picture, the Rabi oscillations represent a collective phenomenon corresponding to oscillations between multiphoton states differing by a single photon. We then extend our analysis to multiphoton processes in which the initial field is a coherent state with a continuous spectrum. In this case, the Rabi frequency is shown to be sensitive to the spectral profile of the function that generates the coherent state.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.16077",
  "author_total": 5,
  "authors": [
    {
      "name": "Ya. S. Greenberg"
    },
    {
      "name": "A. A. Shtygashev"
    },
    {
      "name": "O. A. Chuikin"
    },
    {
      "name": "A. G. Moiseev"
    },
    {
      "name": "O. V. Kibis"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3hs5exwtw3wmd.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.16077",
  "fulltext_url": null,
  "id": "3hs5exwtw3wmd",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.16077",
  "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 optics and atomic interactions"
    ]
  ],
  "openalex": "W7203696149",
  "pdf_url": "https://arxiv.org/pdf/2608.16077",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3hs5exwtw3wmd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:48Z",
      "native_id": "2608.16077",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.16077"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Quantum Rabi oscillations of a qubit strongly coupled to a one-dimensional waveguide",
  "title_text": "Quantum Rabi oscillations of a qubit strongly coupled to a one-dimensional waveguide",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:48Z",
  "url": "https://research.draconitic.com/paper/3hs5exwtw3wmd",
  "venue": "arXiv",
  "versions": []
}