Update Aer backends to BackendV2 #1681
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wshanks
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Mar 27, 2023
### Summary This change set updates the `FakeBackend` used by some tests to derive from `BackendV2` rather than `BackendV1` ### Details and comments When combined with [#900](#900) which updates some calibration tests and [#1040](#1040) which updates `T2HahnBackend`, this change results in almost all the tests in the test suite using `BackendV2`. The remaining tests using a `Backend` that is not `BackendV2` use the `AerSimulator` which will be updated to `BackendV2` in the future (tracked in Qiskit/qiskit-aer#1681). The check for backend type was performed by merging the calibration and `T2HahnBackend` branches into this branch and running the tests with `BaseExperiment.run()`, `BaseExperiment._set_backend()`, and `Calibrations.from_backend()` updated to error if the `backend` argument was not `BackendV2` or `AerSimulator` and confirming that all the tests passed.
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What is the expected behavior?
The BackendV2 interface is the next version of the abstract Backend interface used for describing backends in Qiskit. It was introduced in qiskit-terra 0.19.0 and it's now the primary version used for representing backends in provider packages. We
should update Aer's backends
AerSimulator,StatevectorSimulator, etc to be based onBackendV2instead ofBackendV1.The text was updated successfully, but these errors were encountered: