PennyLane Challenge: Revisiting Schrodinger's cat

PennyLane Challenges
1

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

2

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!

4

Hi, I have completed the challenge. You mentioned that “Solve the Revisiting Schrodinger’s Cat challenge and receive a PennyLane-Wiser certificate of achievement! You must complete the challenge and submit the Wiser quiz before July 15, 2026.” Where can I find the Wiser quiz to submit? And how will I get the certificate? Thanks.

5

Hi @zlysunshine , welcome to the Forum and congratulations on solving the challenge!

If you’re registered in the Wiser Summer Program you will find the quiz on the LMS. You can check with the Wiser team for the exact details on where to find it.

Once we have received all of the submissions we will review them and assign the certificates towards the end of July. Let me know if you have any further questions about this.

1 Like
6

Thanks. I had completed all quizzes under “Access Your Knowledge” in the LMS. Look forward to receiving the certificates towards the end of July. :slight_smile:

1 Like