Double-Pumped Kerr Parametric Amplifier Beyond the Gain-Bandwidth Limit
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Quantum Physics arXiv:2601.00078 (quant-ph) [Submitted on 31 Dec 2025] Title:Double-Pumped Kerr Parametric Amplifier Beyond the Gain-Bandwidth Limit Authors:Nicolas Zapata, Najmeh Etehadi Abari, Mitchell Field, Patrick Winkel, Simon Geisert, Soeren Ihssen, Anja Metelmann, Ioan M. Pop View a PDF of the paper titled Double-Pumped Kerr Parametric Amplifier Beyond the Gain-Bandwidth Limit, by Nicolas Zapata and 7 other authors View PDF Abstract:Superconducting standing$-$wave parametric amplifiers are crucial for the readout of microwave quantum devices. Despite significant improvements in recent years, the need to operate near an instability point imposes a fundamental constraint: the instantaneous bandwidth decreases with increasing amplifier gain. Here we show that it is possible to obtain parametric amplification without instability by using two simultaneous drives that activate phase-preserving gain and frequency conversion. Realized in a granular aluminum dimer with Kerr nonlinearity, our method demonstrates a sixfold bandwidth increase at 20 dB gain, surpasses the conventional gain$-$bandwidth scaling up to 25 dB, and remains near the quantum limit. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2601.00078 [quant-ph] (or arXiv:2601.00078v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2601.00078 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Nicolas Zapata [view email] [v1] Wed, 31 Dec 2025 19:11:27 UTC (7,527 KB) Full-text links: Access Paper: View a PDF of the paper titled Double-Pumped Kerr Parametric Amplifier Beyond the Gain-Bandwidth Limit, by Nicolas Zapata and 7 other authorsView PDFTeX Source view license Current browse context: quant-ph new | recent | 2026-01 References & Citations INSPIRE HEP NASA ADSGoogle Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: 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 Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv (What is alphaXiv?) Links to Code Toggle CatalyzeX Code Finder for Papers (What is CatalyzeX?) DagsHub Toggle DagsHub (What is DagsHub?) GotitPub Toggle Gotit.pub (What is GotitPub?) Huggingface Toggle Hugging Face (What is Huggingface?) Links to Code Toggle Papers with Code (What is Papers with Code?) ScienceCast Toggle ScienceCast (What is ScienceCast?) Demos Demos Replicate Toggle Replicate (What is Replicate?) Spaces Toggle Hugging Face Spaces (What is Spaces?) Spaces Toggle TXYZ.AI (What is TXYZ.AI?) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower (What are Influence Flowers?) Core recommender toggle CORE Recommender (What is CORE?) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs. Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)