I’m having the following problem when running my code, it’s an error that occurs when drawing a quantum circuit diagram. KeyError Traceback (most recent call last) Input In [7], in <cell line: 50>() 43 return qml.expval(qml.PauliZ(2 * wire)) 49 qml.dra…

wires = np.arange(wires_start, wires_end).tolist()

Hello! We could use more information in order to reproduce the error and see what’s going on. Could you send us the code of the circuit that you’d like to plot? Cheers, Alvaro

Sorry, there is no intention to publicize the code yet, but it would be great to be able to point out the problem in private.

Using AmplitudeEmbedding`: >print(Circ(X[0], X[1], params_init)) KeyError Traceback (most recent call last) File d:\miniconda3\lib\site-packages\pennylane\devices\default_qubit.py:219, in DefaultQubit.map_wires(self, wires) 218 try: --> 219 mapped_wires = […

I found that the problem comes from the AmplitudeEmbedding function and the MottonenStatePreparation function, when using the AmplitudeEmbedding function there is a problem with multiple wires not being found, while using the MottonenStatePreparation function makes fewer wires not being found, but t…

KeyError: tensor(0, requires_grad=True)

PennyLane Help

CatalinaAlbornoz February 17, 2023, 10:34pm 7

Thank you for posting the solution here @RX1 !

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KeyError: tensor(0, requires_grad=True)

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