Extended Data Fig. 3: Noise and sensitivity.

a, Measured atom number, N, as a function of hold time, τ. This dataset was taken with trap depth U₀ ≈ 12 E_r. The solid line shows a fit to a decaying exponential. b, Sensitivity and standard quantum limit noise. The measured acceleration sensitivity within one second of measurement time (\(\delta g/g/\sqrt{{\rm{Hz}}}\)) is shown as dots. Values corresponding to the estimated standard quantum limit (shot) noise are calculated from the measured contrast and atom numbers and shown as solid lines.