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<p>Advances in hybrid quantum systems and their precise control are pivotal for developing advanced quantum technologies. Two-dimensional (2D) materials with optically accessible spin defects have emerged as a promising platform for building integrated quantum spin systems due to their exceptional flexibility and scalability. However, experimentally realizing such systems and demonstrating their superiority remains challenging. Here, we present a hybrid spin system operating under ambient conditions, integrating boron vacancy (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({{\rm{V}}}_{{\rm{B}}}^{-}\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mrow> <mi mathvariant="normal">V</mi> </mrow> <mrow> <mi mathvariant="normal">B</mi> </mrow> <mrow> <mo>−</mo> </mrow> </msubsup> </math></EquationSource> </InlineEquation>) spins in 2D hexagonal boron nitride flakes with a single nitrogen vacancy (NV) center in 3D single-crystal diamonds. This combined system achieves full controllability and exhibits enhanced performance for nanoscale magnetic sensing, including an improved dynamic range. Moreover, we investigate the rich many-body spin dynamics within the hybrid system, which enables us to estimate the concentration of <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\({{\rm{V}}}_{{\rm{B}}}^{-}\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mrow> <mi mathvariant="normal">V</mi> </mrow> <mrow> <mi mathvariant="normal">B</mi> </mrow> <mrow> <mo>−</mo> </mrow> </msubsup> </math></EquationSource> </InlineEquation> spins. This work provides a critical foundation for advancing the development of 2D-3D integrated quantum spin systems.</p>

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Room-temperature hybrid 2D-3D quantum spin system for enhanced magnetic sensing and many-body dynamics

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月6日

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  • Haoyu Sun,
  • Pei Yu,
  • Xu Zhou,
  • Xiangyu Ye,
  • Mengqi Wang,
  • Zhaoxin Liu,
  • Yuhang Guo,
  • Wenzhao Liu,
  • You Huang,
  • Pengfei Wang,
  • Fazhan Shi,
  • Kangwei Xia,
  • Ya Wang

摘要

Advances in hybrid quantum systems and their precise control are pivotal for developing advanced quantum technologies. Two-dimensional (2D) materials with optically accessible spin defects have emerged as a promising platform for building integrated quantum spin systems due to their exceptional flexibility and scalability. However, experimentally realizing such systems and demonstrating their superiority remains challenging. Here, we present a hybrid spin system operating under ambient conditions, integrating boron vacancy ( \({{\rm{V}}}_{{\rm{B}}}^{-}\) V B − ) spins in 2D hexagonal boron nitride flakes with a single nitrogen vacancy (NV) center in 3D single-crystal diamonds. This combined system achieves full controllability and exhibits enhanced performance for nanoscale magnetic sensing, including an improved dynamic range. Moreover, we investigate the rich many-body spin dynamics within the hybrid system, which enables us to estimate the concentration of \({{\rm{V}}}_{{\rm{B}}}^{-}\) V B − spins. This work provides a critical foundation for advancing the development of 2D-3D integrated quantum spin systems.