Fig. 3
From: Characterizing large-scale quantum computers via cycle benchmarking
Experimental estimates of how rapidly error rates increase as the processor size increases. a Process fidelities obtained under cycle benchmarking for local gates (blue circles) and for sequences containing dressed Mølmer–Sørensen (MS) gates (red diamonds), that is, MS gates composed with a random Pauli cycle, plotted against the number of qubits in the register. The local operations are consistent with independent errors fitted according to Eq. (8). b Estimate of the process fidelity of an MS gate obtained by taking the ratio of dressed MS and local process fidelities. The data are fitted to Eq. (9) and is consistent with a constant error per two-qubit coupling.
