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arXiv 1706.01754quant-ph
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具有任意频率分辨率的量子传感

Quantum sensing with arbitrary frequency resolution

J. M. Boss, K. S. Cujia, J. Zopes, C. L. Degen

摘要:

量子传感利用良好控制的量子系统来执行具有高灵敏度和精度的测量。我们已经实现了一个具有任意频率分辨率的量子传感的概念,独立于量子位探针,仅受外部同步时钟稳定性的限制。我们的概念利用量子锁定检测来连续探测感兴趣的信号。利用金刚石中单个氮空位中心的电子自旋,我们证明了在MHz带宽上具有70 uHz频率分辨率的振荡磁场的检测。连续采样进一步保证了出色的灵敏度,对于在一小时间隔内测量的170 nT测试信号,达到超过10,000:1的信噪比。我们的技术在磁共振光谱学、量子模拟和灵敏信号检测中有应用。

英文摘要:

Quantum sensing takes advantage of well controlled quantum systems for performing measurements with high sensitivity and precision. We have implemented a concept for quantum sensing with arbitrary frequency resolution, independent of the qubit probe and limited only by the stability of an external synchronization clock. Our concept makes use of quantum lock-in detection to continuously probe a signal of interest. Using the electronic spin of a single nitrogen vacancy center in diamond, we demonstrate detection of oscillating magnetic fields with a frequency resolution of 70 uHz over a MHz bandwidth. The continuous sampling further guarantees an excellent sensitivity, reaching a signal-to-noise ratio in excess of 10,000:1 for a 170 nT test signal measured during a one-hour interval. Our technique has applications in magnetic resonance spectroscopy, quantum simulation, and sensitive signal detection.

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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