Active interference suppression in frequency-division-multiplexed quantum gates via off-resonant microwave tones
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Quantum Physics arXiv:2601.14547 (quant-ph) [Submitted on 21 Jan 2026] Title:Active interference suppression in frequency-division-multiplexed quantum gates via off-resonant microwave tones Authors:Haruki Mitarai, Yukihiro Tadokoro, Hiroya Tanaka View a PDF of the paper titled Active interference suppression in frequency-division-multiplexed quantum gates via off-resonant microwave tones, by Haruki Mitarai and 2 other authors View PDF HTML (experimental) Abstract:An increase in the number of control lines between the quantum processors and the external electronics constitutes a major bottleneck in the realization of large-scale quantum computers. Frequency-division multiplexing is expected to enable multiple qubits to be controlled through a single microwave cable; however, interference from off-resonant microwave tones hinders precise qubit control. Here, we propose an active interference suppression method for frequency-division-multiplexed simultaneous gate operations. We demonstrate that deliberate incorporation of off-resonant microwave tones improves the accuracy of single-qubit gates. Specifically, we find that by incorporating off-resonant orthogonal or quasi-orthogonal microwave tones, the gate infidelity decreases proportionally to the inverse square of the number of microwave tones. Furthermore, we show that fast oscillations neglected under the rotating wave approximation degrade gate fidelity, and that this degradation can be mitigated through optimized frequency allocation. Our approach is simple yet effective for improving the performance of frequency-division-multiplexed quantum gates. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2601.14547 [quant-ph] (or arXiv:2601.14547v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2601.14547 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Haruki Mitarai [view email] [v1] Wed, 21 Jan 2026 00:06:53 UTC (1,866 KB) Full-text links: Access Paper: View a PDF of the paper titled Active interference suppression in frequency-division-multiplexed quantum gates via off-resonant microwave tones, by Haruki Mitarai and 2 other authorsView PDFHTML (experimental)TeX 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?)