Ikko Hamamura

Cashing qobj may be alternative.

Thanks. Surely this problem should not be solved by workarounds like my proposal, we need fundamentally improvement. I was told that this is an old problem that has been discussed...

Yes. This requires some `DeprecationWarning`. I'll redesign overall with `options` (with flexible `dataclass`) align with `qiskit-ibm-runtime`.

Close this PR. If someone wants to continue this, please reopen.

Need to enhance rustworkx as well @mtreinish Edited: I mean we need to enhance https://www.rustworkx.org/apiref/rustworkx.graph_greedy_color.html

There are two types of noise model simulations: trajectory and density matrix. In this case, the density matrix should be used. In the case of statevector, it is computed in...

TBH, I'm not sure which method is chosen by the simulator method option `automatic` https://qiskit.org/ecosystem/aer/stubs/qiskit_aer.AerSimulator.html.

This is not a bug. This approximation method ignores measurement errors. It should be explicitly written in the documentation. (I have an idea for a method to take in the...

Thanks. AerEstimator needs this validation https://github.com/Qiskit/qiskit/blob/main/qiskit/primitives/backend_estimator.py#L219-L225

I implemented EstimatorV2Converter https://github.com/Qiskit/qiskit/pull/11899. It may be useful for EstimatorV2. Unfortunately, it is not possible to implement SamplerV2Converter because result data are completely different. But, there are no advantages for...