Fig. 2
From: Pulse control protocols for preserving coherence in dipolar-coupled nuclear spin baths
Nuclear spin echoes in a single neutral InGaAs QD. a Decay of the 71Ga NMR spin echo measured via hyperfine shift ΔEhf as a function of the total free evolution time τevol under different control sequences. Symbols mark experimental data and solid lines show best fits with Eq. (3). b, c Results for 75As and 115In, respectively
