在六角化中空位旋转缺陷的中间兴奋状态放松动态
Paul Konrad1, Mehran Kianinia2, Lesley Spencer2
1Experimental Physics 6 and Würzburg-Dresden Cluster of Excellence ct.qmat, Julius-Maximilians-Universität Würzburg, Würzburg, Germany.
Science advances
|February 25, 2026
概括
研究人员研究了六角化量子传感器中中间状态 (IS) 的放松动态. 他们测量了IS放松时间和优化传感器协议,显著提高了量子传感效率.
科学领域:
- 量子传感是一种量子感应.
- 固态物理 固态物理
- 材料科学是一种材料科学.
背景情况:
- 六角性化 (hBN) 容纳了可用于二维量子传感的可光学解决的自旋缺陷.
- 了解兴奋状态动态,特别是非辐射性放松路径至关重要,但人们对其了解甚少.
- 涉及中间状态 (IS) 和其速率常数的非辐射放松仍然是假设的.
研究的目的:
- 在hBN缺陷的光学循环中研究IS的放松动态.
- 在广泛的温度范围内量化IS放松时间.
- 通过考虑IS放松来优化量子传感协议.
主要方法:
- 对IS放松时间的温度依赖测量.
- 光学试验. 光学试验.
- 旋转群体和基态极化演变的模拟.
- 优化光学检测的磁共振 (ODMR) 脉冲序列.
主要成果:
- 在室温下从IS到地面状态的放松时间为24.0{\displaystyle 24.0}{\displaystyle 24.0}{\displaystyle 24.0}{\displaystyle 24.0}{\displaystyle 24.0}{\displaystyle 24.0}{\displaystyle 24.0}{\displaystyle 23.0}}
- 观察到IS放松时间在低温下大约翻一番.
- 模拟提供了对旋转群和极化动态的见解.
- 优化的ODMR脉冲序列显示了增强的旋转操纵效率.
结论:
- 该研究提供了hBN缺陷中IS放松动态的直接测量.
- 了解和计算IS放松是优化量子传感器性能的关键.
- 这项工作使得在hBN中基于空位的量子传感器的灵敏度得到了实质性的改进.
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