{
  "abstract": "Direct entangling gates between spatially separated qubits are a key capability for modular quantum computing. They enable nonlocal quantum circuits to be executed across different processor modules, thereby alleviating single-chip scaling constraints and expanding the effective connectivity of the system. Here, we propose and numerically investigate a remote adiabatic controlled-Z gate between two frequency-tunable superconducting qubits connected by a multi-mode coaxial cable. The cable-mediated interaction enables the gate to be implemented without additional tunable couplers, preserving a simple circuit architecture. For a 30-cm cable, simulations incorporating ten standing-wave modes yield an optimized gate infidelity of $4.71\\times10^{-7}$ with a duration of 376.7 ns in the absence of decoherence. The gate maintains high fidelity under qubit-frequency fluctuations and millimeter-scale cable-length variations. Calculations for 50- and 100-cm cable situations demonstrate its potential for even larger cryogenic systems. These results provide a promising approach to extending high-fidelity quantum operations beyond individual chips and toward scalable, interconnected superconducting quantum processors.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.18081",
  "author_total": 4,
  "authors": [
    {
      "name": "Si-Yu Xu"
    },
    {
      "name": "Yi-Rong Jin"
    },
    {
      "name": "Wen-Gang Zhang"
    },
    {
      "name": "Hai-Feng Yu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5j566tmheasez.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.18081",
  "fulltext_url": null,
  "id": "5j566tmheasez",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.18081",
  "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",
      "1702|Quantum Information and Cryptography"
    ]
  ],
  "openalex": "W7213528096",
  "pdf_url": "https://arxiv.org/pdf/2609.18081",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5j566tmheasez.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:01Z",
      "native_id": "2609.18081",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.18081"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Remote Adiabatic Controlled-Z Gate between Distant Superconducting Qubits",
  "title_text": "Remote Adiabatic Controlled-Z Gate between Distant Superconducting Qubits",
  "type": "preprint",
  "updated_at": "2026-10-30T12:22:01Z",
  "url": "https://research.draconitic.com/paper/5j566tmheasez",
  "venue": "arXiv",
  "versions": []
}