Extended Data Fig. 6: Simulation of the MBVQE algorithm under different error models.
From: Generation of genuine entanglement up to 51 superconducting qubits
(a) Ground state energy estimation and (b) Order parameter Z1. ‘Simulated_0’ denotes the ideal case where no error happens; ‘Simulated_1’ denotes the simulation with gate error to be depolarizing error, where error rate equals 0.002/0.01 for single/two-qubit gates; ‘Simulated_2’ denotes the simulation with depolarizing error (same error as Simulated_1) and measurement noise where error rate equals 0.05 for the first three ancillas qubits; ‘Simulated’ denotes the simulation with all of the errors in ‘Simulated_2’ and additional measurement noise for the rest four qubits. As a benchmark, we also plot the theoretical value for ground state energy, the first excited state energy, and the order parameter Z1. The simulation result leverage 20,000 repetitions of measurements for each circuit and measurement setting.
