Extended Data Fig. 2: Calibration of small-angle Rabi rotation around \({\hat{L}}_{x}\) axis.
From: Quantum-enhanced sensing by echoing spin-nematic squeezing in atomic Bose–Einstein condensate
In the experiment, we fix the RF amplitude (A0) of the first one in the composite pulse, while the amplitude (A) of the second one is changed to tune the net rotation angle. This figure shows the dependence of the accumulated phase angle on the amplitude ratio of A/A0.
