Towards Mapping Gravity and High-order Derivatives with a Compact Atom Interferometer

Atom interferometer-based quantum sensors are rapidly developing towards compact mobilizable designs. Our goal is to create the next-generation mobile quantum gravimeter, capable of simultaneously mapping vertical gravity, gravity gradient, and curvature for geophysics surveys. Our compact design of the vacuum chamber and single diode-laser system creates optimal conditions for preparing and controlling atomic clouds. We demonstrate a diamond-shaped magneto-optical trap (MOT) mirror geometry, enabling a single laser beam to trap three vertically separated cold atomic clouds. We simulated the atomic trajectories under the forces applied by the laser field formed by the mirror and a magnetic quadrupole field, demonstrating the capability of the MOT. We are testing the MOT and polarization gradient cooling inside the mirror. Our next step is to measure an interferometry fringe to measure gravity and ultimately extend our vacuum chamber setup to include the three MOT mirrors to measure the gravity curvature.