PennyLane Challenge: Revisiting Schrodinger's cat

PennyLane Challenges
1

Use this topic to ask your questions about the PennyLane Challenge: Revisiting Schrodinger’s cat.

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Hello,

for U_3, I used qml.Rot, but I am getting an error Your evolve_atom_cat circuit does not do what is expected.
Here is my code

theta, phi, w = params
qml.QubitUnitary(unitary, wires=['atom', 'cat'])
qml.Rot(theta, phi, w, wires='atom')
return qml.state()

Can someone help figure out the problem ?
Thanks

3

Hi @yoshypdf ,
The thing here is that U3 and Rot have different matrices. Look for U3 and Rot in the PennyLane docs and compare their matrices. Now you can use the right gate to solve this challenge!