Extended Data Fig. 4: Calibration of the applied RF magnetic field.
From: Spin squeezing of 1011 atoms by prediction and retrodiction measurements
a, Calibration using the displacement of atomic spins. b, Calibration using a small pickup coil. The amplitude of the RF output in our detection experiment is −97 dB m, which lies at the bottom left of the figure. In both curves, a slope near 1 indicates a good linear relation.
