Prospects for Precise Measurements with Echo Atom Interferometry
arXiv:1606.06831 · doi:10.3390/atoms4030019
Abstract
Echo atom interferometers have emerged as interesting alternatives to Raman interferometers for the realization of precise measurements of the gravitational acceleration and the determination of the atomic fine structure through measurements of the atomic recoil frequency . Here we review the development of different configurations of echo interferometers that are best suited to achieve these goals. We describe experiments that utilize near-resonant excitation of laser-cooled rubidium atoms by a sequence of standing wave pulses to measure with a statistical uncertainty of 37 parts per billion (ppb) on a time scale of ms and with a statistical precision of 75 ppb. Related coherent transient techniques that have achieved the most statistically precise measurements of atomic g-factor ratios are also outlined. We discuss the reduction of prominent systematic effects in these experiments using off-resonant excitation by low-cost, high-power lasers.
34 pages + references, 17 figures
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