ROBUST RAMSEY SEQUENCES WITH RAMAN ADIABATIC RAPID PASSAGE

摘要

Methods and apparatus provide for inertial sensing and atomic time-keeping based on atom interferometry. According to one example a method for inertial sensing includes trapping and cooling a cloud of atoms, applying a first beam splitter pulse sequence to the cloud of atoms, applying a mirror sequence to the cloud of atoms subsequent to applying the first beam splitter pulse sequence, applying a second beam splitter pulse sequence to the cloud of atoms subsequent to applying the mirror sequence, modulating at least one of a phase and an intensity of at least one of the first and the second beam splitter pulse sequences, performing at least one measurement subsequent to applying the second beam splitter pulse on the cloud of atoms during an interrogation time, and generating a control signal based on the at least one measurement.