论文标题
了解非常长的基线原子干涉仪的重力和磁环境
Understanding the gravitational and magnetic environment of a very long baseline atom interferometer
论文作者
论文摘要
通过利用干涉阶段的二次依赖性时间，汉诺威非常长的基线原子干涉仪设施（VLBAI）的目标是sub nm/s $^2 $重力测量灵敏度。 Vlbai凭借其10 m的垂直基线，在测试量子力学和一般相对论之间的界面基本物理学方面提供了有希望的前景。在这里，我们讨论了控制VLBAI的磁性和引力环境所面临的挑战，并报告其对设备准确性的影响。在磁性防护罩的内部8 m内，残留磁场梯度预计仅会导致偏置加速度仅为6 $ \ times $ 10 $^{ - 14} $ m/s $^2 $，而我们由于设施的非线性重力梯度至2.6 nm/s $^2 $而评估偏置偏移。该模型允许VLBAI设施作为用于校准目的的其他移动设备的参考，其不确定性低于10 nm/s $^2 $级别。
By utilizing the quadratic dependency of the interferometry phase on time, the Hannover Very Long Baseline Atom Interferometer facility (VLBAI) aims for sub nm/s$^2$ gravity measurement sensitivity. With its 10 m vertical baseline, VLBAI offers promising prospects in testing fundamental physics at the interface between quantum mechanics and general relativity. Here we discuss the challenges imposed on controlling VLBAI's magnetic and gravitational environment and report on their effect on the device's accuracy. Within the inner 8 m of the magnetic shield, residual magnetic field gradients expect to cause a bias acceleration of only 6$\times$10$^{-14}$ m/s$^2$ while we evaluate the bias shift due to the facility's non-linear gravity gradient to 2.6 nm/s$^2$. The model allows the VLBAI facility to be a reference to other mobile devices for calibration purposes with an uncertainty below the 10 nm/s$^2$ level.
