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Adiabatic inversion signal (blue trace) and resulting magnetometer signal (black trace) for 0.3-Hz modulation frequency. Overlying the magnetometer signal is a fit to a sinusoidal function. The phase in the fit accounts for the time required for water to travel from the encoding region to the detection region. The lower trace shows the on/off pattern of the adiabatic inverter. The signal was averaged over 20 min.
