Remote Entanglement of Solid-State Spin Qubits Integrated in Broadband Waveguides

Quantum Physics arXiv:2607.12002 (quant-ph) [Submitted on 13 Jul 2026] Title:Remote Entanglement of Solid-State Spin Qubits Integrated in Broadband Waveguides Authors:Christopher Waas, Timo Dolné, Hans K.C. Beukers, Alexander M. Stramma, Nina Codreanu, Noé Mathieu, Ronald Hanson View a PDF of the paper titled Remote Entanglement of Solid-State Spin Qubits Integrated in Broadband Waveguides, by Christopher Waas and 6 other authors View PDF Abstract:Solid-state spin-photon interfaces promise to scale quantum networks through on-chip photonic integration and multiplexed entanglement generation. To date, remote entanglement between integrated emitters has been realized only in cavity-enhanced systems, where fabrication yield and spectral matching remain major obstacles. Here we demonstrate heralded remote entanglement between diamond tin-vacancy spin qubits embedded in separate on-chip waveguides. Combining intrinsically efficient photon emission with a broadband waveguide architecture provides high device yield and obviates the need for spectral matching to cavity modes. We realize coherent optical and spin control and achieve high-visibility two-photon interference. By combining photon-mediated entanglement generation with real-time feedforward, we produce a consistent entangled state independent of the heralding pattern. These results establish waveguide-integrated tin-vacancy centers as a compelling platform for scalable quantum network nodes. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2607.12002 [quant-ph] (or arXiv:2607.12002v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2607.12002 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Christopher Waas [view email] [v1] Mon, 13 Jul 2026 18:00:00 UTC (1,802 KB) Full-text links: Access Paper: View a PDF of the paper titled Remote Entanglement of Solid-State Spin Qubits Integrated in Broadband Waveguides, by Christopher Waas and 6 other authorsView PDFTeX Source view license Current browse context: quant-ph new | recent | 2026-07 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?) 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?)