Fig. 6: Circuit diagram depicting the generic experiment required to construct the two-step process tensor.
From: Demonstration of non-Markovian process characterisation and control on a quantum processor
Each gate represents an element from either the preparation set \({\mathcal{P}}\) or the more general unitary basis set \({\mathcal{U}}\). The identity gates represent idle time which we allow to vary. Finally, measurements in three bases are made for QST.
