Figure 8
From: Trapped-ion quantum simulation of tunable-range Heisenberg chains

Spin correlations after a global quench: At time , the system is quenched by changing the detuning from 1kHz to 10MHz, i.e., the range of interactions is changed. Before the quench, the system is in a dimerized state of localized correlations, after the quench correlations spread throughout the whole system.