Elena Peña Tapia

Good catch @timmintam, I think you are right and the generator should be set in the init, not every time users call `run`. And this issue extends to the `StatevectorEstimator`...

Related to https://github.com/Qiskit/qiskit/issues/11659.

> What is the benefit of having a `Sampler` and `Estimator` class here rather than just cutting them out entirely and just doing `backend.sample(qc)` and `backend.estimate(qc)`? If you go through...

> So the primary benefit is that I do not have to care/learn about another object. Especially one that is primarily an IBM Quantum construct. i.e. no one else has...

We are working with examples that are too overfitted to the `IBMBackend` when discussing something abstract and general. The `BackendV3` interface doesn't limit how a downstream implementation can deal with...

> From Qiskit Runtime's perspective, our users just went through great pain to migrate from `backend.run` to the primitives. Personally I don't see enough value out of this proposal to...

Sure, I'll assign you.

I don't think there is much more beyond what was suggested in the issue. The only open question is whether to keep the migration guides section at all (even if...

As of [9078df2](https://github.com/Qiskit/qiskit/pull/12850/commits/9078df2010d0e0f251b269fcc04bd319cce12947), there are 347 failing tests that must be classified into one of these 2 use cases depending on the different input combinations: 1. User path we can...

Status after [df78b1c](https://github.com/Qiskit/qiskit/pull/12850/commits/df78b1c459cca906f9ac387e1051253bd2d6b64d): ``` ====== Totals ====== Ran: 13562 tests in 234.3214 sec. - Passed: 13146 - Skipped: 90 - Expected Fail: 0 - Unexpected Success: 0 - Failed: 326...