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It is proposed to use rectangular Raman pulses for the technique ofsequantial large momentum transfer. It is shown that the small parameters thatmake it possible to use this technology for precision atom interferometry canbe 40--200 times smaller than in the case of the Bragg regime. It is predictedthat in the case of a non-equidistant timing of auxiliary pulses, one canobserve oscillations in time of the interference picture with a periodinversely proportional to the recoil frequency. Such an observation would bethe first confirmation that Mach-Zehnder atom interference is a phenomenoncaused by the quantization of the atomic center-of-mass motion. This effect iscalculated for any shape of pulses. One can observe it in the Bragg regime aswell. It is proposed to use non-continuous composite Raman pulses as auxiliarybeam splitters so that the effective Rabi frequency remains unchanged for theentire process. The gravity phase of an atomic interferometer is calculated forany shape, duration, and timing of Raman pulses, including the Bragg regime.The phase corrections caused by the finite pulses' durations are alsocalculated for rectangular Raman pulses shape.

Sequantial large momentum transfer exploiting rectangular Raman pulses