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arXiv 2602.23712cond-mat.mes-hallquant-ph
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利用钻石自旋实现交流电场的实时振幅与相位估计

Real-time Amplitude and Phase Estimation of AC Fields with Diamond Spins

School of Science, RMIT University(皇家墨尔本理工大学理学院)

Christopher T. -K. Lew, Samuel A. Wilkinson, Nicholas Gillespie, Brant C. Gibson, David A. Broadway, Jean-Philippe Tetienne

AI总结:

本研究利用钻石自旋实现了交流电场的实时振幅与相位估计,通过单次测量获取高灵敏度的电场信息,并展示了实时动态调整探测频率的能力。

摘要:

钻石中的氮-空位中心已被证明能够以高灵敏度、光谱分辨率和空间分辨率检测交流磁场所产生的电场。然而,迄今为止大多数研究都集中在时间平均或时间相关测量的领域,而对单次测量领域关注较少。在这里,我们证明了通过一对连续的两次测量可以获取交流电场的振幅和相位。我们通过测量4 MHz的交流电场,展示了这一概念,其每 shot 的振幅和相位灵敏度分别为78 nT和63 mrad,时间分辨率为320 us。我们还研究了探测频率偏移的影响,并量化了在强场区域操作所产生的误差。此外,我们展示了该测量协议能够实时动态改变探测频率的能力。这项工作推动了NV中心在交流磁场实时测量中的应用。

英文摘要:

Nitrogen-vacancy centers in diamond have been shown to be capable of detecting AC magnetic fields with high sensitivity, spectral resolution, and spatial resolution. However, most studies so far have focused on the regime of time-averaged or time-correlated measurements, while little attention has been paid to the single-shot regime. Here we show that the amplitude and phase of an AC field can be retrieved from a single pair of two consecutive measurements. We demonstrate this concept by measuring a 4 MHz AC field with a per-shot amplitude and phase sensitivity of 78 nT and 63 mrad, respectively, at a temporal resolution of 320 us. We also investigate the effects and quantify the errors resulting from probe frequency detunings, as well as operating in the strong field regime. Moreover, we showcase the ability of the measurement protocol to dynamically change the probe frequency in real-time. This work advances the use of NV centers for real-time measurements of AC magnetic fields.

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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