arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2301.05091cond-mat.mes-hallquant-ph
收藏

氮-空位中心光致发光强度与自旋对比度的温度依赖性

Temperature dependence of photoluminescence intensity and spin contrast in nitrogen-vacancy centers

Stefan Ernst, Patrick J. Scheidegger, Simon Diesch, Luca Lorenzelli, Christian L. Degen

AI总结:

本研究测量了4-300 K下金刚石中单个NV中心的光致发光特性,发现10-100 K间强度与自旋对比度显著降低,并建立了基于自旋混合和轨道跳跃的模型定量解释观测结果,为探测电子-声子相互作用和优化量子实验条件提供了新途径。

摘要:

我们报告了在4-300 K温度范围内,金刚石中单个氮-空位(NV)中心的光致发光(PL)特性的测量结果。我们观察到在约10-100 K之间,PL强度和自旋对比度显著降低,而在低于和高于该温度范围时则恢复至较高水平。此外,我们发现其对磁场偏置场和晶体应变存在丰富的依赖性。我们开发了一个基于电子激发态中自旋混合和轨道跳跃的综合模型,该模型定量地解释了这些观测结果。除了对激发态动力学的更完整理解外,我们的工作还提供了一种探测电子-声子相互作用的新方法,以及一个用于优化量子应用实验条件的预测工具。

英文摘要:

We report on measurements of the photoluminescence (PL) properties of single nitrogen-vacancy (NV) centers in diamond at temperatures between 4-300 K. We observe a strong reduction of the PL intensity and spin contrast between ca. 10-100 K that recovers to high levels below and above. Further, we find a rich dependence on magnetic bias field and crystal strain. We develop a comprehensive model based on spin mixing and orbital hopping in the electronic excited state that quantitatively explains the observations. Beyond a more complete understanding of the excited-state dynamics, our work provides a novel approach for probing electron-phonon interactions and a predictive tool for optimizing experimental conditions for quantum applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑