Hi! A simple question that however is causing me some troubles. I’m trying to design a personalized schedule for IBM’s backend (real QPU). All the customized settings but one work. Specifically, I was trying to map the virtual qubits to a specific set on the QPU through the initial_layout as writt…

Hi @Alex1 , Thanks for sharing this here! Could you please share a minimal reproducible code example and the full error traceback so that we can investigate? IMPORTANT: please don’t share your API key nor any confidential data.

For sure, sorry for the Italian in some parts of the code. I reported the code for the simulator. Another question: theoretically the resilience level is activated in the Pennylane circuit, right? This is the output: …

I tried also this type of format dev = qml.device( "qiskit.remote", backend = backend, wires = len(physical_qubits), optimization_level = 1, initial_layout = physical_qubits ), but also in this case it doesn’t work. Interestingly, this exact approach worked when I submitted a …

Hi @Alex1 , thanks for reporting this! I think you might be right. Would you like to open a bug report in the PennyLane-Qiskit repo ? I can open one on your behalf if you prefer. If you do open one please link to this conversation, and share the link to the issue here too in case someone else wants …

Thanks if you open a PennyLane-Qiskit repo for me! In the past days I provided to report the bug due to the update also to the IBM center. In any case I solved partially the problem converting the circuit through the qml.tape and than the qml.circuit_to_qiksit method and passing it to the pass_manag…

Troubles with mapping virtual to physical qubits on a IBM's backend

PennyLane Help

CatalinaAlbornoz March 4, 2026, 12:56am 7

I’m glad you were able to solve it! And thanks for sharing the solution here.

I’ve created the GitHub issue here. I hope we can get to it soon.

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Troubles with mapping virtual to physical qubits on a IBM's backend

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