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A Traveling-Wave Parametric Amplifier With Integrated Diplexers

arXiv Quantum Archived Mar 16, 2026 ✓ Full text saved

arXiv:2603.12327v1 Announce Type: new Abstract: Traveling-Wave Parametric Amplifiers (TWPAs) are ubiquitous in superconducting circuit readout, providing high gain with near-quantum-limited noise performance across a wide bandwidth. Their operation, however, relies on a strong microwave pump tone that is typically delivered using off-chip passive components, such as directional couplers or diplexers. These external elements add loss, increase system complexity, and limit scalability. Here, we pr

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Quantum Physics [Submitted on 12 Mar 2026] A Traveling-Wave Parametric Amplifier With Integrated Diplexers C. Denney, K. Genter, K. Cicak, J. D. Teufel, J. Aumentado, F. Lecocq, M. Malnou Traveling-Wave Parametric Amplifiers (TWPAs) are ubiquitous in superconducting circuit readout, providing high gain with near-quantum-limited noise performance across a wide bandwidth. Their operation, however, relies on a strong microwave pump tone that is typically delivered using off-chip passive components, such as directional couplers or diplexers. These external elements add loss, increase system complexity, and limit scalability. Here, we present a traveling-wave parametric amplifier that incorporates on-chip input and output diplexers for pump routing. This co-fabricated architecture offers a compact and scalable solution for superconducting-circuit readout. Comments: 10 pages, 7 figures Subjects: Quantum Physics (quant-ph); Applied Physics (physics.app-ph); Instrumentation and Detectors (physics.ins-det) Cite as: arXiv:2603.12327 [quant-ph] (or arXiv:2603.12327v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2603.12327 Focus to learn more Submission history From: Maxime Malnou [view email] [v1] Thu, 12 Mar 2026 18:00:06 UTC (24,297 KB) Access Paper: HTML (experimental) view license Current browse context: quant-ph < prev | next > new | recent | 2026-03 Change to browse by: physics physics.app-ph physics.ins-det References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)

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