91 lines
4.0 KiB
Plaintext
91 lines
4.0 KiB
Plaintext
---
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title: Qiskit 0.31 release notes
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description: Changes made in Qiskit 0.31
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in_page_toc_max_heading_level: 4
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---
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# Qiskit 0.31 release notes
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## 0.31.0
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<span id="id202" />
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### Terra 0.18.3
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No change
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<span id="release-notes-0-9-1-aer" />
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<span id="id203" />
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### Aer 0.9.1
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<span id="release-notes-0-9-1-aer-upgrade-notes" />
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<span id="id204" />
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#### Upgrade Notes
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* `optimize_ideal_threshold` and `optimize_noisy_threshold` have been removed from the lists of simulator defaults and the documentation. These have had no effect since Aer 0.5.1, but these references to them had remained accidentally.
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<span id="release-notes-0-9-1-aer-bug-fixes" />
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<span id="id205" />
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#### Bug Fixes
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* Fixes [#1351](https://github.com/Qiskit/qiskit-aer/issues/1351) where running an empty [`QuantumCircuit`](/api/qiskit/0.45/qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit") with a noise model set would cause the simulator to crash.
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* Fixes [#1347](https://github.com/Qiskit/qiskit-aer/issues/1347) where the behaviour of using the `set_options()` and `set_option()` methods of simulator backends could lead to different behavior for some options.
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* Fixes an bug where using a Dask Client executor would cause an error at job submission due to the executor Client not being pickleable.
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* Fixed an issue with the matrix\_product\_state simulation method where the accumulation of small rounding errors during measurement of many quits could sometimes cause a segmentation fault.
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* Fixes an unintended change between qiskit-aer 0.8.0 and 0.9.0 where when running a list of circuits with an invalid circuit using the `automatic` simulation method of the `AerSimulator` or `QasmSimulator` would raise an exception for an invalid input qobj rather than return partial results for the circuits that were valid.
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* Fixes an issue with the standalone simulator where it would return a [IBM Quantum API schema](https://github.com/Qiskit/ibm-quantum-schemas) invalid response in the case of an error that prevented the simulation from running.
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* Fixes [#1346](https://github.com/Qiskit/qiskit-aer/issues/1346) which was a bug in the handling of the `parameter_binds` kwarg of the backend `run()` method that would result in an error if the parameterized circuit was transpiled to a different set of basis gates than the original parameterizations.
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<span id="id206" />
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### Ignis 0.6.0
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No change
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<span id="id207" />
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### Aqua 0.9.5
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No change
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<span id="ibm-q-provider-0-17-0" />
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<span id="release-notes-0-17-0-ibmq" />
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### IBM Q Provider 0.17.0
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<span id="release-notes-0-17-0-ibmq-new-features" />
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<span id="id208" />
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#### New Features
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* A runtime program’s visibility can now be specified on upload using `is_public` parameter in `qiskit.providers.ibmq.runtime.IBMRuntimeService.upload_program()`.
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* You can now specify a parent experiment ID when creating an experiment with `qiskit.providers.ibmq.experiment.IBMExperimentService.create_experiment()`. Experiments can also be filtered by their parent experiment ID in `qiskit.providers.ibmq.experiment.IBMExperimentService.experiments()`.
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* Runtime image can now be specified using the image parameter in `qiskit.providers.ibmq.runtime.IBMRuntimeService.run()`. Note that not all accounts are authorized to select a different image.
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<span id="release-notes-0-17-0-ibmq-upgrade-notes" />
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<span id="id209" />
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#### Upgrade Notes
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* `qiskit.providers.ibmq.runtime.RuntimeEncoder` and `qiskit.providers.ibmq.runtime.RuntimeDecoder` are updated to support Python `datetime`, which is not JSON serializable by default.
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<span id="release-notes-0-17-0-ibmq-bug-fixes" />
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<span id="id210" />
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#### Bug Fixes
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* Fixes the issue where `qiskit.providers.ibmq.managed.IBMQJobManager.retrieve_job_set()` only retrieves the first 10 jobs in a `qiskit.providers.ibmq.managed.ManagedJobSet`.
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* `qiskit.providers.ibmq.runtime.RuntimeDecoder` can now restore dictionary integer keys in optimizer settings from a JSON string representation dumped by the `qiskit.providers.ibmq.runtime.RuntimeEncoder`.
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<span id="qiskit-0-30-1" />
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