Temporal-Mode Engineering for Multiplexed Microwave Photons and Mode-Selective Quantum State Transfer
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Quantum Physics arXiv:2603.10506 (quant-ph) [Submitted on 11 Mar 2026] Title:Temporal-Mode Engineering for Multiplexed Microwave Photons and Mode-Selective Quantum State Transfer Authors:Keika Sunada (1), Takeaki Miyamura (1), Kohei Matsuura (1), Zhiling Wang (2), Jesper Ilves (1), Shingo Kono (3), Yasunobu Nakamura (1 and 2) ((1) Department of Applied Physics, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan, (2) RIKEN Center for Quantum Computing (RQC), Saitama, Japan, (3) NNF Quantum Computing Programme, Niels Bohr Institute, University of Copenhagen, Denmark) View a PDF of the paper titled Temporal-Mode Engineering for Multiplexed Microwave Photons and Mode-Selective Quantum State Transfer, by Keika Sunada (1) and 17 other authors View PDF HTML (experimental) Abstract:Quantum communication between distant superconducting qubits on separate chips using itinerant microwave photons has been studied to realize distributed quantum information processing. To enhance information capacity and fault tolerance in quantum networks, it is beneficial to encode a large quantity of quantum information using auxiliary degrees of freedom of these photons. In this work, we experimentally investigate the use of temporal modes of photon wave packets. Through the photon-shaping technique with a fixed-frequency transmon qubit, we generate single microwave photons in four orthogonal temporal modes propagating along a waveguide. We demonstrate mode-selective absorption across orthogonal modes via the time-reversed process of emission, achieving absorption efficiencies exceeding 0.89 for mode-matched cases, while remaining below 0.13 for orthogonal modes. Photons rejected by a given receiver mode can remain mutually orthogonal, enabling selective absorption at subsequent receivers in future multi-node architectures. These results highlight the feasibility of temporal-mode engineering for constructing a higher-dimensional orthogonal basis for multiplexed quantum networks. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2603.10506 [quant-ph] (or arXiv:2603.10506v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2603.10506 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Keika Sunada [view email] [v1] Wed, 11 Mar 2026 07:59:58 UTC (1,315 KB) Full-text links: Access Paper: View a PDF of the paper titled Temporal-Mode Engineering for Multiplexed Microwave Photons and Mode-Selective Quantum State Transfer, by Keika Sunada (1) and 17 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-03 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?)