State preparation with pennylane

[josh]

In addition, you can also check out the following post for some example code:

Optimizing state overlap / multi-qubit qml.expval.Hermitian()

And just for completeness, here is the full optimization: import pennylane as qml from pennylane import numpy as np dev = qml.device('default.qubit', wires=2) @qml.qnode(dev) def circuit(x, target_observable=None): qml.RX(x[0], wires=0) qml.RY(x[1], wires=0) qml.RZ(x[2], wires=0) qml.CNOT(wires=[0, 1]) return qml.expval.Hermitian(target_observable, wires=[0, 1]) target_state = 1/np.sqrt(2) * np.array([1,0,0,1]) target_herm_op = np.outer(target_state.conj(), target_state) …