{
  "abstract": "We demonstrate K-band nondegenerate three-wave-mixing amplification in a multimode resonator comprising an array of 500 SNAILs. Pairing K-band signal modes with lower-frequency internal idler modes enables 20 dB of gain continuously from 19.6 to 25.6 GHz with pump frequencies below 32.2 GHz. At 20 dB gain, the 3-dB bandwidth ranges from 2.6 to 11.7 MHz, and the input-referred 1-dB compression power reaches -100.9 dBm. In the 20-22 GHz band, the average added noise is 0.73 quanta. A two-mode nondegenerate parametric amplification model describes the measured gain response and gain-bandwidth behavior, while a multimode Kerr model captures the overall compression scale. Our amplifier provides a practical solution for implementing a state-of-the-art readout of superconducting qubits in the K-band.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.27743",
  "author_total": 2,
  "authors": [
    {
      "name": "Chulwoo Ahn"
    },
    {
      "name": "Vladimir Manucharyan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9ryshnhvzeg1x.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.27743",
  "fulltext_url": null,
  "id": "9ryshnhvzeg1x",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.27743",
  "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": "W7223117932",
  "pdf_url": "https://arxiv.org/pdf/2610.27743",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9ryshnhvzeg1x.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.27743",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.27743"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Multimode Parametric Amplifier for K-Band Quantum Measurements",
  "title_text": "Multimode Parametric Amplifier for K-Band Quantum Measurements",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/9ryshnhvzeg1x",
  "venue": "arXiv",
  "versions": []
}