论文标题
卫星量子测试的共同位置问题的分辨率解析了自由秋天的普遍性
Resolution of the Co-Location Problem in Satellite Quantum Tests of the Universality of Free Fall
论文作者
论文摘要
自由跌倒普遍性（UFF）的所有伽利略掉落测试的主要挑战是，由于耦合到重力梯度和旋转，释放后两个测试量的初始运动学所需的控制所需的控制。在这项工作中，我们提出了一种两倍的小措施策略，以使用补偿机制以及信号解调，从而大大减轻UFF太空量子量子测试的源准备要求。为此，我们提出了一个方案，以减少在专用卫星任务中的原子互化实验中重力梯度诱导的不确定性并评估实验性可行性。我们发现，使用中等参数，可以通过五个数量级放松两个质量的初始运动学的要求。这不仅意味着大大减少了任务时间，而且还允许减少由$ 10^{ - 18} $级别降低的差分加速度不确定性。
A major challenge common to all Galilean drop tests of the Universality of Free Fall (UFF) is the required control over the initial kinematics of the two test masses upon release due to coupling to gravity gradients and rotations. In this work, we present a two-fold mitigation strategy to significantly alleviate the source preparation requirements in space-borne quantum tests of the UFF, using a compensation mechanism together with signal demodulation. To this end, we propose a scheme to reduce the gravity-gradient-induced uncertainties in an atom-interferometric experiment in a dedicated satellite mission and assess the experimental feasibility. We find that with moderate parameters, the requirements on the initial kinematics of the two masses can be relaxed by five orders of magnitude. This does not only imply a significantly reduced mission time but also allows to reduce the differential acceleration uncertainty caused by co-location imperfections below the $10^{-18}$ level.
