Fig. 2: Different QITE schemes for the transverse-field Ising model.
From: Quantum imaginary time evolution steered by reinforcement learning
Filled markers represent the numerical data; unfilled markers represent the experimental data. The experimental errors were mitigated by virtual distillation. Blue diamonds/dotted lines represent the standard quantum imaginary time evolution (QITE); green triangles/dashed lines represent the randomized QITE; red circles/lines represent the reinforcement learning (RL)-steered QITE. a Energy versus β, the black dashed line represents the ground state energy. b Fidelity versus β. c Algorithmic errors during the evolution.
