论文标题
在量子投影噪声极限处的紧凑型差重量表
A compact differential gravimeter at the quantum projection noise limit
论文作者
论文摘要
原子干涉法为地球物理和惯性感测提供了新的观点。我们介绍了一种新型的基于量子的仪器的工业原型：一种紧凑，可运输的，差异的量子重力计，能够同时测量引力加速度的绝对值，$ g $及其垂直梯度，$γ__{ZZ} $。虽然对G的敏感性与最佳工业重量表具有竞争力，但对$γ_{Zz} $的敏感性达到了量子投射噪声的限制，以确定为0.1 E的前所未有的长期稳定性（$ 1E = 1e = 1e = 1 \ times = 1 \ times timpes 10^{ - 9} s^{ - 2} { - 2} $）。这种独特的双重用途工具为地球物理学，土木工程和重力辅助导航的新应用铺平了道路，在该导航中精确地映射引力场起着重要作用。
Atom interferometry offers new perspectives for geophysics and inertial sensing. We present the industrial prototype of a new type of quantum-based instrument: a compact, transportable, differential quantum gravimeter capable of measuring simultaneously the absolute values of both gravitational acceleration, $g$, and its vertical gradient, $Γ_{zz}$. While the sensitivity to g is competitive with the best industrial gravimeters, the sensitivity on $Γ_{zz}$ reaches the limit set by quantum projection noise-leading to an unprecedented long-term stability of 0.1 E ($1E=1\times 10^{-9}s^{-2}$). This unique, dual-purpose instrument, paves the way for new applications in geophysics, civil engineering, and gravity-aided navigation, where accurate mapping of the gravitational field plays an important role.
