Allow StandardRB to handle a V2 backend without a coupling map#1293
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wshanks
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I can add a release note, but I would like a reviewer to confirm that this is a good solution first. |
This was referenced Oct 27, 2023
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`StandardRB` handles directed two-qubit gates differently from bi-directional ones. For `BackendV2`, it used the `coupling_map` to check for directionality but did not handle the case where the coupling map was `None` which implies all to all connectivity. With this change, `StandardRB` treats gates with no coupling map as bidirectional. This issue first surfaced with qiskit-aer 0.13.0 which made `AerSimulator` a `BackendV2` backend (#1292). (cherry picked from commit a34df8c)
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…ort #1293) (#1298) This is an automatic backport of pull request #1293 done by [Mergify](https://mergify.com). --- `StandardRB` handles directed two-qubit gates differently from bi-directional ones. For `BackendV2`, it used the `coupling_map` to check for directionality but did not handle the case where the coupling map was `None` which implies all to all connectivity. With this change, `StandardRB` treats gates with no coupling map as bidirectional. This issue first surfaced with qiskit-aer 0.13.0 which made `AerSimulator` a `BackendV2` backend (#1292).
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…t-community#1293) `StandardRB` handles directed two-qubit gates differently from bi-directional ones. For `BackendV2`, it used the `coupling_map` to check for directionality but did not handle the case where the coupling map was `None` which implies all to all connectivity. With this change, `StandardRB` treats gates with no coupling map as bidirectional. This issue first surfaced with qiskit-aer 0.13.0 which made `AerSimulator` a `BackendV2` backend (qiskit-community#1292).
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StandardRBhandles directed two-qubit gates differently from bi-directional ones. ForBackendV2, it used thecoupling_mapto check for directionality but did not handle the case where the coupling map wasNonewhich implies all to all connectivity. With this change,StandardRBtreats gates with no coupling map as bidirectional.This issue first surfaced with qiskit-aer 0.13.0 which made
AerSimulatoraBackendV2backend (#1292).