Fig. 4: Results of the compound clock demonstration.
From: Dynamical decoupling of laser phase noise in compound atomic clocks
a Phase measurement errors Δϕ1 of clock 1 only (blue circles) and Δϕtot of the full compound clock (red circles) in our proof-of-principle experiment, for K = 1093 unique samples of artificial laser frequency noise. ϕ0 is the phase excursion imprinted onto the interrogation laser for each sample. The grey shaded area represents the range of phase errors by clock 1 that can be fully compensated by the measurement of clock 2 (i.e. for which fringe assignment in clock 2 is correct, see main text and “Methods”). b Histogram of the phase measurement errors of clock 1 (blue) and of the compound clock (red). The grey shaded area represents the same range of phase errors as in a. c Histogram of the imprinted laser phase deviations for comparison.
