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Research Focus

固态自旋量子调控


本课题组在固态自旋量子调控方向开展了系统而深入的研究，围绕稀土离子自旋与金刚石缺陷中心等固态量子体系，致力于从单自旋量子态调控、相干性质研究到量子传感应用拓展的完整研究链条。


课题组聚焦稀土离子自旋体系，实现了单个稀土离子自旋的相干量子调控，揭示了其在晶体中的精细能级结构及光学相干特性。近期工作进一步将研究拓展至微米尺度薄膜体系，系统研究了稀土自旋在低维结构中的相干性质及其退相干机制，为可集成量子器件的发展提供了关键物理基础。


此外，课题组还结合金刚石NV色心等体系，发展了一系列高灵敏度量子精密测量技术。这些工作将固态自旋量子比特与实际复杂环境相结合，显著拓展了量子传感在生物医学、硬件防伪与信息加密中的应用边界。


总体而言，本课题组通过融合量子光学与自旋调控技术，在固态自旋体系的相干调控、及其量子精密测量中的应用方面取得了一系列具有国际影响力的成果，为发展新一代固态量子器件与量子传感技术奠定了坚实基础。



  1. 固态掺杂单个稀土离子光探测及量子调控

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2. 金刚石色心量子调控


科研论文：

  1. Zihua Chai, Zeyu Gao, Mengqi Wang, Jingyang Zhou, Pei Yu, Xu Zhou, Junyu Guan, Pei Zhang, Ya Wang, Kangwei Xia*, Atomic-scale physical unclonable functions in solids, Sci. Adv. 12, eaed3987 (2026)

  2. Zihua Chai+, Zhaocong Wang+, Xinghang Chen, Quanshen Shen, Zeyu Gao, Junyu Guan, Hanyu Zhang, Ya Wang, Yang Tan*, Feng Chen, Kangwei Xia*, Coherence Properties of Rare-Earth Spins in Micrometer-Thin Films, ACS Photon. 4c02520 (2025)

  3. Chu-Feng Liu+, Weng-Hang Leong+, Kangwei Xia+, Xi Feng, Amit Finkler, Andrej Denisenko, Jörg Wrachtrup, Quan Li*, Ren-Bao Liu*, Ultra-sensitive hybrid diamond nanothermometer, Nat. Sci. Rev.  nwaa194 (2021)

  4. Xi Feng+, Weng-Hang Leong+, Kangwei Xia+, Chu-Feng Liu, Gang-Qin Liu, Torsten Rendler, Joerg Wrachtrup, Ren-Bao Liu*, Quan Li*, Association of Nanodiamond Rotation Dynamics with Cell Activities by Translation-Rotation Tracking, Nano Lett. 21, 3393 (2021)

  5. Kangwei Xia*, Roman Kolesov, Ya Wang*, Petr Siyushev, Thomas Kornher, Rolf Reuter, Sen Yang, Jörg Wrachtrup, Spectroscopy properties of a single praseodymium ion in a crystal, New. J. Phys. 22, 073002 (2020)

  6. Thomas Kornher*, Da-Wu Xiao, Kangwei Xia, Fiammetta Sardi, Nan Zhao, Roman Kolesov, Jörg Wrachtrup, Sensing individual nuclear spins with a single rare-earth electron spin, Phys. Rev. Lett. 124, 170402 (2020)

  7. Kangwei Xia+, Chu-Feng Liu+, Weng-Hang Leong+, Man-Hin Kwok, Zhi-Yuan Yang, Xi Feng, Ren-Bao Liu*, Quan Li*, Nanometer-precision non-local deformation reconstruction using nanodiamond sensing, Nat. Commun. 10 3259 (2019)

  8. Kangwei Xia*, Roman Kolesov, Ya Wang, Petr Siyushev, Rolf Reuter, Thomas Kornher, Nadezhda Kukharchyk, Andreas D Wieck, Bruno Villa, Sen Yang, Jörg Wrachtrup, All-optical preparation of coherent dark states of a single rare earth ion spin in a crystal, Phys. Rev. Lett. 115, 093602 (2015)

  9. P. Siyushev+, K. Xia+, R. Reuter, M. Jamali, N. Zhao*, C. Duan, N. Kukharchyk, A. Wieck, R. Kolesov*, J. Wrachtrup, Coherent properties of single rare-earth spin qubits, Nat. Commun. 5 3895 (2014)

  10. Roman Kolesov*, Kangwei Xia, Rolf Reuter, Mohammad Jamali, Rainer Stöhr, Tugrul Inal, Petr Siyushev, Jörg Wrachtrup, Mapping spin coherence of a single rare-earth ion in a crystal onto a single photon polarization state, Phys. Rev. Lett. 111, 120502, (2013)

  11. R. Kolesov*, K. Xia, R. Reuter, R. Stöhr, A. Zappe, J. Meijer, P. Hemmer, J. Wrachtrup, Optical detection of a single rare-earth ion in a crystal, Nat. Commun. 3, 1029 (2012)





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