Figure 5: Visibility measurement in the monopartite lattice.
From: Controlling coherence via tuning of the population imbalance in a bipartite optical lattice
(a) Visibility of 87Rb, plotted as a function of the well depth V0, for ΔV=0 and Vz,0=29 Erec. Vertical dashed lines: values of V0/Erec corresponding to the tips of the Mott lobes with different filling g, as computed through QMC (see Supplementary Note 5). Grey solid lines in regions I–III are a guide to the eyes, whereas the red line in region IV displays a fit to the function A(U/zJ)α with A=4.0±0.7 and α=−1.00±0.06, showing good agreement with the theoretical prediction18. The error bars represent the statistical variance of typically 4–5 independent measurements. (b) Numerical derivative of the visibility data; vertical lines as in a. The error bars are derived from the ones in a.
