Figure 3: Average error per gate for SUPCODE pulses at h0=0.
From: Composite pulses for robust universal control of singlet–triplet qubits
These figures show the average error per gate Δ as functions of δh/Jmax for the rotation around the z axis by (a) φ0=π/2 and (b) φ0=1.7π. The red solid curves are for the uncorrected pulse with quadratic leading order errors in δh. Other curves are showing the three-piece (blue dashed lines), five-piece (black dotted line), seven-piece (magenta dash-dotted lines), and nine-piece (orange dash-dotted lines) SUPCODE pulses that cancel gate error Δ up through second, fourth, fourth and sixth order in δh, respectively.
