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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.06421 |
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| _version_ | 1866915779705831424 |
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| author | He, Zhen-Xuan Thiering, Gergő Liang, Rui-Jian Zhou, Ji-Yang Ren, Shuo Lin, Wu-Xi Hao, Zhi-He Hu, Qi-Cheng Wang, Jun-Feng Gali, Adam Xu, Jin-Shi Li, Chuan-Feng Guo, Guang-Can |
| author_facet | He, Zhen-Xuan Thiering, Gergő Liang, Rui-Jian Zhou, Ji-Yang Ren, Shuo Lin, Wu-Xi Hao, Zhi-He Hu, Qi-Cheng Wang, Jun-Feng Gali, Adam Xu, Jin-Shi Li, Chuan-Feng Guo, Guang-Can |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_06421 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Coherent Spin-Photon Interface of single PL6 Color Centers in Silicon Carbide He, Zhen-Xuan Thiering, Gergő Liang, Rui-Jian Zhou, Ji-Yang Ren, Shuo Lin, Wu-Xi Hao, Zhi-He Hu, Qi-Cheng Wang, Jun-Feng Gali, Adam Xu, Jin-Shi Li, Chuan-Feng Guo, Guang-Can Quantum Physics 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. |
| title | Coherent Spin-Photon Interface of single PL6 Color Centers in Silicon Carbide |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2602.06421 |