📄️ Parametric circuit
Quantum circuits with variable parameters play an important role in some quantum algorithms, especially variational algorithms. QURI Parts treats such circuits in a special way so that such algorithms can be efficiently performed. In QURI Parts, we provide 2 types of parametric ciricuits. For either type of circuits, the parametric gates are all Pauli rotation gates, but they hold the parameters in different ways. They are
📄️ Parametric states and parametric estimators
This tutorial aims to introduce parametric states and parametric estimators, which are also important building blocks of variational algorithms.
📄️ Gradient estimators
One of the most important element of performing optimization algorithms is computing the gradient of a physical observable's gradient with respect to a set of circuit parameters: