For when the circuit runs, but the probability distribution makes no sense. Help desk.
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I spent 3 hours wondering why my gate counts were so high. Turns out I was running a surface code without mapping it to the backend's heavy-hex coupling map.
Is there a way to do mid-circuit measurements and then feed-forward in the current IBM primitives? I keep getting state preparation errors.
I'm trying to run a Variational Quantum Eigensolver (VQE) for $H_2$ on a noisy backend, but the energy minimum keeps drifting. I suspect it's the Readout Error. Here's my ansatz setup: ```python from qiskit.circuit.library import EfficientSU2 ansatz = EfficientSU2(2, reps=1) # ... optimization loop ... ``` Has anyone had success with Error Mitigation techniques like PEC or ZNE for this?