论文标题
通过Hermite-Gaussian指针对角旋转的超敏度测量
Ultrasensitive Measurement of Angular Rotations via Hermite-Gaussian Pointer
论文作者
论文摘要
探索对角度旋转测量的高灵敏度是光学和计量学的出色挑战。在这项工作中，我们在弱测量方案中采用了Mn阶Hermite-gaussian光束，并具有角度旋转相互作用，其中旋转信息是在选择后后完全由另一种HG模式状态获取的。通过在最终光束上进行投影测量，角度旋转的精度提高了2MN+M+N的系数。为了进行验证，我们执行一个光学实验，其中最小可检测的角旋转改善了$ \ sqrt {15} $ - 在HG11模式下使用HG55模式的折叠，并实现了测量精度的亚微米尺度。我们的理论框架和实验结果不仅为超敏感的角度旋转提供了更实用，更方便的方案，而且还为量子计量学的广泛应用提供了贡献。
Exploring high sensitivity on the measurement of angular rotations is an outstanding challenge in optics and metrology. In this work, we employ the mn-order Hermite-Gaussian beam in the weak measurement scheme with an angular rotation interaction, where the rotation information is taken by another HG mode state completely after the post-selection. By taking a projective measurement on the final light beam, the precision of angular rotation is improved by a factor of 2mn+m+n. For verification, we perform an optical experiment where the minimum detectable angular rotation improves $\sqrt{15}$-fold with HG55 mode over that of HG11 mode, and achieves a sub-microradian scale of the measurement precision. Our theoretical framework and experimental results not only provide a more practical and convenient scheme for ultrasensitive measurement of angular rotations, but also contribute to a wide range of applications in quantum metrology.
