Fig. 4
From: Benchmarking engineered exchange interactions on NISQ hardware

Experimental characterization of the \(\sqrt{i\text {SWAP}}\) gate via QPT. (a) The ideal process matrix. (b) The noise-free simulation result (\(\mathcal {F}{\text {sim}} = 98.02\%\)). (c) The process reconstructed from data acquired on the ibm_perth quantum computer (\(\mathcal {F}{\text {exp}} = 87.65\%\)).