Breaking changes in the AQT API

[fg-aqt]

The AQT service hosted at gateway-portal.aqt.eu has been deactivated and is replaced by a new solution. Usage of the current version of the PennyLane-AQT plugin is therefore no longer possible!

The new service offers improved access to AQT's quantum computers and can be used following these instructions.

For adapting the PennyLane-AQT plugin to access the new API directly, find the OpenAPI specification at https://arnica.aqt.eu/api/v1/docs. Consulting the qiskit-aqt-provider code may also be helpful.

[josh146]

Thanks @fg-aqt! Would someone from the AQT side be able to open a small PR to update the API used within this plugin to address the changes?

[fg-aqt]

Yes, we can definitely contribute to a small PR to adapt the plugin regarding communication with the new API and the new payload structure.

Unfortunately I can currently not make any commitment on when we will be able to do that.