{
  "abstract": "We investigate the emission profiles of singly excited collective states and propose a matched-mode witnessing protocol in a mirror-terminated waveguide quantum electrodynamics system. The amplitudes and relative phases of the initial collective excitation are encoded in the temporal mode of the emitted single-photon wavepacket, providing a route to state verification through the common waveguide output. We identify the emission mode associated with a chosen target state and employ an auxiliary virtual-cavity representation to evaluate the quantum state of this selected output mode. For a matched initial state, the selected mode contains the emitted single photon, whose Wigner function exhibits a pronounced non-classical negative dip, serving as a distinct fingerprint of the target many-body state. With the reference mode held fixed, different initial configurations yield different photon occupations and phase-space distributions, demonstrating the state selectivity of the protocol. These results connect collective-state verification with temporal-mode analysis of the emitted radiation, offering access to collective coherence with reduced reliance on qubit-resolved correlation measurements.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.04553",
  "author_total": 5,
  "authors": [
    {
      "name": "Kuan-Ting Lin"
    },
    {
      "name": "Chen-Yu Lee"
    },
    {
      "name": "Yu-Chen Lin"
    },
    {
      "name": "Ting Hsu"
    },
    {
      "name": "Guin-Dar Lin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0yy3hmkvy9ngd.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.04553",
  "fulltext_url": null,
  "id": "0yy3hmkvy9ngd",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.04553",
  "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",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.04553",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0yy3hmkvy9ngd.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T15:21:25Z",
      "native_id": "2611.04553",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.04553"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Wigner-Function Fingerprints of Collective Excitations in Mirror-Terminated Waveguide QED",
  "title_text": "Wigner-Function Fingerprints of Collective Excitations in Mirror-Terminated Waveguide QED",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:01Z",
  "url": "https://research.draconitic.com/paper/0yy3hmkvy9ngd",
  "venue": "arXiv",
  "versions": []
}