Coherent Spin-Photon Interface of single PL6 Color Centers in Silicon Carbide
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Quantum Physics arXiv:2602.06421 (quant-ph) [Submitted on 6 Feb 2026] Title:Coherent Spin-Photon Interface of single PL6 Color Centers in Silicon Carbide Authors:Zhen-Xuan He, Gergő Thiering, Rui-Jian Liang, Ji-Yang Zhou, Shuo Ren, Wu-Xi Lin, Zhi-He Hao, Qi-Cheng Hu, Jun-Feng Wang, Adam Gali, Jin-Shi Xu, Chuan-Feng Li, Guang-Can Guo View a PDF of the paper titled Coherent Spin-Photon Interface of single PL6 Color Centers in Silicon Carbide, by Zhen-Xuan He and 12 other authors View PDF HTML (experimental) Abstract:The PL6 color center in silicon carbide has recently emerged as a promising platform for quantum information processing, yet its coherent spin--photon interface has remained largely unexplored. Here we present a comprehensive investigation of single PL6 centers, combining spectroscopy with theoretical analysis. The excited-state fine structure is fully resolved using group-theoretical modeling and strain-dependent measurements. Under resonant excitation, we achieve a spin initialization fidelity of $99.69 \pm 0.03\%$ and a readout contrast of $98.31 \pm 1.03\%$. The spin--photon--entangled $A_2$ transition exhibits narrow optical linewidths ($\sim 180$~MHz) and a polarization visibility of $\sim 82\%$. Coherent optical driving enables Rabi frequencies up to $2.895$~GHz, while dynamical decoupling extends the spin coherence time from $0.5$~ms to $5.70$~ms. Our results establish PL6 as a competitive solid-state spin--photon interface hosted in a commercially available semiconductor platform. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2602.06421 [quant-ph] (or arXiv:2602.06421v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.06421 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Zhenxuan He [view email] [v1] Fri, 6 Feb 2026 06:34:03 UTC (3,856 KB) Full-text links: Access Paper: View a PDF of the paper titled Coherent Spin-Photon Interface of single PL6 Color Centers in Silicon Carbide, by Zhen-Xuan He and 12 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-02 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?)