论文标题
通过单离子声子激光检测DC电力具有Zeptonewton灵敏度
Detection of DC electric forces with zeptonewton sensitivity by single-ion phonon laser
论文作者
论文摘要
检测极小的力有助于定量探索新的物理。在这里，我们证明了由单个被困的$^{40} $ ca $^{+} $ ion制成的声子激光作为小型力量测量的精美传感器。我们报告了我们对DC诱捕潜力的成功检测，灵敏度为2.41 $ \ pm $ 0.49 Zn/$ \ sqrt {\ rm hz} $，仅在多普勒冷却下的离子，基于抑制抑制量的振动液的注射阶段，以抑制了分类量的渗透阶段。我们预计，一旦诱捕系统进一步提高并进一步提高了诱捕系统，这种单人离子传感器将来将在将来达到更好的力检测灵敏度。
Detecting extremely small forces helps exploring new physics quantitatively. Here we demonstrate that the phonon laser made of a single trapped $^{40}$Ca$^{+}$ ion behaves as an exquisite sensor for small force measurement. We report our successful detection of small electric forces regarding the DC trapping potential with sensitivity of 2.41$\pm$0.49 zN/$\sqrt{\rm Hz}$, with the ion only under Doppler cooling, based on the injection-locking of the oscillation phase of the phonon laser in addition to the classical squeezing applied to suppress the measurement uncertainty. We anticipate that such a single-ion sensor would reach a much better force detection sensitivity in the future once the trapping system is further improved and the fluorescence collection efficiency is further enhanced.
