Extended Data Fig. 4: Tb–F oscillations in the CPMG experiment.
From: Emergence of highly coherent two-level systems in a noisy and dense quantum network

Data of Fig. 4c (right) plotted against τ3/2 = [t/(2N)]3/2 instead of t1/2, showing that the oscillations originating from Tb-F interactions fall on top of each other. The frequencies ωI match the original case (N = 1) treated by Mims34. and 2ωI for N > 1, as well as an increasing oscillation amplitude with increasing N as shown by Mitrikas et al.35.