Department of Physics and Biophysics, University of San Diego, San Diego, California 92110, USA.
Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, USA.
Phys Rev Lett. 2023 Jun 30;130(26):263402. doi: 10.1103/PhysRevLett.130.263402.
Interferometry is a prime technique for modern precision measurements. Atoms, unlike light, have significant interactions with electric, magnetic, and gravitational fields, making their use in interferometric applications particularly versatile. Here, we demonstrate atom interferometry to image optical and magnetic potential landscapes over an area exceeding 240 μm×600 μm. The differential potentials employed in our experiments generate phase imprints in an atom laser that are made visible through a Ramsey pulse sequence. We further demonstrate how advanced pulse sequences can enhance desired imaging features, e.g., to image steep potential gradients. A theoretical discussion is presented that provides a semiclassical analysis and matching numerics.
干涉测量是现代精密测量的主要技术。与光不同，原子与电场、磁场和重力场有显著的相互作用，这使得它们在干涉测量应用中特别多能。在这里，我们演示了原子干涉测量术，以对超过 240μm×600μm 的面积的光学和磁位景观进行成像。我们的实验中采用的差分势在原子激光中产生相位印记，通过 Ramsey 脉冲序列使其可见。我们进一步展示了如何使用先进的脉冲序列来增强所需的成像特征，例如，对陡峭的势梯度进行成像。我们提出了一个理论讨论，提供了半经典分析和匹配数值。
