arXiv 2201.042982022-01-13quant-phphysics.app-ph

室温固态脉泽增强型量子传感

Enhanced quantum sensing with room-temperature solid-state masers

Hao Wu, Shuo Yang, Mark Oxborrow, Qing Zhao, Bo Zhang, Jiangfeng Du

备注：: 9 pages, 4 figures

摘要：

固态系统的量子传感在从材料和生物医学科学到基础物理学的各个领域都有广泛的应用。已经开发了几种固态自旋传感器，促进了对诸如磁场和电场以及温度的物理量的超灵敏检测。利用非相互作用自旋的集体行为有望将检测极限推到更低的水平，而到目前为止，由于固态自旋系综的线宽变宽和读出效率低下，这些水平几乎无法达到。在这里，我们的实验表明，这些缺点可以克服新重生的微波激射技术在室温下在固态。由于微波激射的作用，我们观察到一个分子自旋系综的非均匀加宽线宽减少了4倍，这比在低温下从单自旋测得的线宽要窄。基于脉泽的读出应用于磁力显示的信噪比（SNR）为30分贝的单次拍摄。这项技术将是一个重要的工具箱，以提高灵敏度的固态系综自旋传感器。

英文摘要：

Quantum sensing with solid-state systems finds broad applications in diverse areas ranging from material and biomedical sciences to fundamental physics. Several solid-state spin sensors have been developed, facilitating the ultra-sensitive detection of physical quantities such as magnetic and electric fields and temperature. Exploiting collective behaviour of non-interacting spins holds the promise of pushing the detection limit to even lower levels, while to date, those levels are scarcely reached due to the broadened linewidth and inefficient readout of solid-state spin ensembles. Here, we experimentally demonstrate that such drawbacks can be overcome by newly reborn maser technology at room temperature in the solid state. Owing to maser action, we observe a 4-fold reduction in the inhomogeneously broadened linewidth of a molecular spin ensemble, which is narrower than the same measured from single spins at cryogenic temperatures. The maser-based readout applied to magnetometry showcases a signal-to-noise ratio (SNR) of 30 dB for single shots. This technique would be a significant addition to the toolbox for boosting the sensitivity of solid-state ensemble spin sensors.

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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英文摘要：

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