Generalized gravity-gradient mitigation scheme

A major challenge in high-precision light-pulse atom interferometric experiments such as tests of the weak equivalence principle is uncontrollable dependency phase on initial velocity and position atoms presence inhomogeneous gravitational fields. To overcome this limitation, mitigation strategies have been proposed, however, valid only for harmonic potentials or small branch separations more general situations. Here we provide a formula anharmonic perturbation including local effects that vary length scales much smaller than spatial extent probed by originate, e.g., from buildings surround experiment. Furthermore, our results are applicable to interferometer geometries with arbitrary separation allow compensation Coriolis rotating reference frames.