Fig. 2: Excitation probability in the ensemble of Landau–Zener crossings.
From: Experimentally testing quantum critical dynamics beyond the Kibble–Zurek mechanism
The quantum critical dynamics of the one-dimensional transverse-field quantum Ising model is accessible in an ion-trap quantum simulator, which implements the corresponding Landau–Zener crossings governing the dynamics in each mode, labeled by wavevector k. The Rabi frequency ΩR = 4J/\(\hslash\) was set to 2π × 20 kHz in the experiment. For each value of the wavevector k, the excitation probability is estimated from 10,000 measurements. The shaded region describes the excitation probability predicted by the Landau–Zener formula. Deviations from the later become apparent for fast quench times, especially for large values of k. Error bars indicate the standard deviation over 10,000 measurements.
