{
  "abstract": "Symmetry plays a fundamental role in determining the phases and physical properties of quantum matter. Controlling symmetry in mesoscopic superconducting devices provides a route to reconfigure their phase-coherent transport. Here we demonstrate symmetry-selective Josephson interferometry in lateral NbTi/PtTe$_{\\text{2}}$/NbTi junctions by controlling the relative orientations of the current and magnetic field. From the supercurrent interference patterns, we construct a field-current symmetry map that identifies configurations exhibiting or violating the device-level parity ($\\mathcal{P}$), time-reversal ($\\mathcal{T}$) and their combined $\\mathcal{PT}$ symmetry. In the absence of an in-plane field, the junction exhibits a symmetric Fraunhofer pattern. An in-plane field parallel to the current produces a pronounced side-lobe asymmetry, whereas reversing both the current and the complete magnetic-field configuration restores a generalized $\\mathcal{T}$ relation. Remarkably, orienting the in-plane field perpendicular to the current restores the $\\mathcal{PT}$-symmetric Fraunhofer response even at substantial field strengths. A microscopic model attributes this behavior to the interplay between disorder-induced potential variations and flux dipoles generated by in-plane-field Meissner focusing near the superconducting electrodes. Our results establish a reconfigurable Josephson interferometer in which the field-current geometry selects the symmetry operation being probed and switches the device between symmetry-broken and symmetry-restored interference states.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.16414",
  "author_total": 9,
  "authors": [
    {
      "name": "Yi-Chen Tsai"
    },
    {
      "name": "Yung-Yeh Chang"
    },
    {
      "name": "Tao-Yi Hsu"
    },
    {
      "name": "Thomas Kuo"
    },
    {
      "name": "Chia-Nung Kuo"
    },
    {
      "name": "Chin-Shan Lue"
    },
    {
      "name": "Kuei-Lin Chiu"
    },
    {
      "name": "Chen-Hsuan Hsu"
    },
    {
      "name": "Chung-Ting Ke"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ckvmaaps8v79h.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.16414",
  "fulltext_url": null,
  "id": "ckvmaaps8v79h",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.16414",
  "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",
      "cond-mat.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.supr-con"
    ],
    [
      "openalex",
      "3107|Quantum and electron transport phenomena"
    ]
  ],
  "openalex": "W7203533262",
  "pdf_url": "https://arxiv.org/pdf/2608.16414",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ckvmaaps8v79h.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2608.16414",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.16414"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Field-controlled breaking and restoration of parity-time symmetry in Josephson interference",
  "title_text": "Field-controlled breaking and restoration of parity-time symmetry in Josephson interference",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/ckvmaaps8v79h",
  "venue": "arXiv",
  "versions": []
}