Using SU(2) group theory and Fisher information, the authors show that phase-rotation measurements in atom gravimeters retain near-universal optimality and high metrological gain under strong Doppler broadening.
Notably, under conditions of two-photon resonance, it can be rig- 5 -0.6 -0.4 -0.2 0 0.2 -0.2 -0.1 0 0.1 0.2 0.3 0 5 10 15 20 25 30 FIG
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Approximate universality and large measurement gain of Rabi model in a linear potential under strong Doppler broadening
Using SU(2) group theory and Fisher information, the authors show that phase-rotation measurements in atom gravimeters retain near-universal optimality and high metrological gain under strong Doppler broadening.