Quantum Error Mitigation via ZNE: run circuits at amplified noise levels λ=1,2,3... and extrapolate to λ→0 to estimate the noiseless expectation value.
Press "Run ZNE" to start.
ZNE (Temme et al. 2017, Li & Benjamin 2017): noise is amplified by factors λ=1,2,3,4 via gate stretching or pulse deformation. Richardson extrapolation or exponential fit → unbiased estimator ⟨O⟩₀ = Σₖ aₖ⟨O⟩_λₖ.