Fig. 2: Comparing the results from the IBM device to the classical simulations.
From: Evidence of Kardar-Parisi-Zhang scaling on a digital quantum simulator

a The spin autocorrelation function on site 0 in the discrete time XXZ model at the isotropic point. The trotter step is taken to be 4J−1, with added weavings from 1J−1, 1.5J−1, and 2J−1. b Results for the correlator in the discrete time isotropic XXZ model with a staggered field. The trotter step is taken to be 4J−1, with added weavings from 1J−1, 1.5J−1, and 2J−1.