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arXiv 1201.4420cond-mat.mes-hallquant-ph
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600K以上单氮空位中心自旋的测量与控制

Measurement and Control of Single Nitrogen-Vacancy Center Spins above 600 K

D. M. Toyli, D. J. Christle, A. Alkauskas, B. B. Buckley, C. G. Van de Walle, D. D. Awschalom

摘要:

研究了室温至700 K之间金刚石中单氮空位(NV)中心的自旋和轨道动力学。我们发现,在室温以上光学寻址和相干控制单自旋的能力受到非辐射过程的限制,该过程在550和700 K之间淬灭NV中心基于荧光的自旋读出。结合电子结构计算,我们的测量表明,3E和1A1电子态之间的能量差约为0.8 eV。我们还表明,不均匀的自旋寿命(T2*)是温度无关的至少625 K,这表明单NV中心可以作为纳米温度计在很宽的温度范围内。

英文摘要:

We study the spin and orbital dynamics of single nitrogen-vacancy (NV) centers in diamond between room temperature and 700 K. We find that the ability to optically address and coherently control single spins above room temperature is limited by nonradiative processes that quench the NV center's fluorescence-based spin readout between 550 and 700 K. Combined with electronic structure calculations, our measurements indicate that the energy difference between the 3E and 1A1 electronic states is approximately 0.8 eV. We also demonstrate that the inhomogeneous spin lifetime (T2*) is temperature independent up to at least 625 K, suggesting that single NV centers could be applied as nanoscale thermometers over a broad temperature range.

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。

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