Release Notes


New Features

  • If using a channel_strategy, only backends that support that channel_strategy will be accessible to the user.

  • Added the option to define a default account in the account json file. To select an account as default, define set_as_default=True in QiskitRuntimeService.save_account().

  • Added new method Session.from_id which creates a new session with a given id.

  • There will now be a warning if a user submits a job that is predicted to exceed their system execution time monthly quota of 10 minutes. This only applies to jobs run on real hardware in the instance ibm-q/open/main. If the job does end up exceeding the quota, it will be canceled.

Upgrade Notes


New Features

  • Users can use a new environment variable, USAGE_DATA_OPT_OUT to opt out of user module usage tracking by setting this value to True. Additionally, only certain qiskit modules will be tracked instead of all modules that begin with qiskit or qiskit_.

  • Users can now pass in a value of default to the channel_strategy parameter in qiskit_ibm_runtime.QiskitRuntimeService. Now, if an account is configured with a certain channel strategy, the user can override it by passing in default.

  • The Sampler and Estimator primitives have been enhanced to incorporate custom validation procedures when the channel_strategy property within the :class:qiskit_ibm_runtime.QiskitRuntimeService is configured as “q-ctrl.” This customized validation logic effectively rectifies incorrect input options and safeguards users against inadvertently disabling Q-CTRL’s performance enhancements.

Bug Fixes

  • Retrieving backend properties with properties() now supports passing a datetime parameter to retrieve properties from a past date.

  • The noise_factors and extrapolator options in qiskit_ibm_runtime.options.ResilienceOptions will now default to None unless resilience_level is set to 2. Only options relevant to the resilience level will be set, so when using resilience_level 2, noise_factors will still default to (1, 3, 5) and extrapolator will default to LinearExtrapolator. Additionally, options with a value of None will no longer be sent to the server.

  • Job error messages will no longer be returned in all uppercase.

  • The max_execution_time option is now based on system execution time instead of wall clock time. System execution time is the amount of time that the system is dedicated to processing your job. If a job exceeds this time limit, it is forcibly cancelled. Simulator jobs continue to use wall clock time.


New Features

  • Added a global_service, so that if the user defines a QiskitRuntimeService, it will be used by the primitives, even if the service is not passed to them explicitly. For example:

    from qiskit_ibm_runtime import QiskitRuntimeService, Sampler
    service = QiskitRuntimeService(channel="ibm_quantum")
    # Sampler._service field will be initialized to ``service``
    sampler = Sampler(backend="ibmq_qasm_simulator")
  • Added validations for options on the second level of the dict, i.e., for each of resilience, simulator, execution, and transpilation, check that their options are supported. Otherwise throw an exception.

Upgrade Notes

Deprecation Notes

Bug Fixes

  • When running on channel “ibm_cloud”, it is possible not to specify the backend. In this case, the system selects one of the available backends for this service. Issue #625 https://github.com/Qiskit/qiskit-ibm-runtime/issues/625 reported that the the backend returned by job.backend() was not always the actual backend on which the job was run. This PR fixes this bug.

  • Previously we added validation when jobs were run to make sure the number of circuits was not greater than the maximum for that backend, backend.max_circuits. This limit isn’t actually necessary for primtives run from within a session.


New Features

  • Added a new property, usage_estimation() that returns the estimated system execution time, quantum_seconds. System execution time represents the amount of time that the system is dedicated to processing your job.

  • Raise an exception if the number of circuits passed to _run_primitive() exceeds the number of circuits supported on the backend.

  • There is a new method update_tags() that can be used to update the job_tags of a job.

  • If instance is provided as parameter to qiskit_ibm_runtime.QiskitRuntimeService, then this is used as a filter in QiskitRuntimeService.backends(). If instance is not recognized as one of the provider instances, an exception will be raised. Previously, we only issued a warning.


New Features

  • If a job has been cancelled, and job.result() is requested, throw an exception rather than returning None.

  • A new method, qiskit_ibm_runtime.options.SimulatorOptions.set_backend(), allows users to more easily set simulator options for a backend.

    from qiskit.providers.fake_provider import FakeManila
    from qiskit_aer.noise import NoiseModel
    # Make a noise model
    fake_backend = FakeManila()
    # Set options to include the noise model
    options = Options()
    options.simulator.seed_simulator = 42

Bug Fixes

  • Fixed infinite recursion when attempting to deepcopy an IBMBackend. Added a method qiskit_ibm_runtime.IBMBackend.deepcopy().

  • Fixed an issue where circuit metadata was not being serialized correctly resulting in a type error.


Deprecation Notes


New Features

  • When retrieving a job with qiskit_ibm_runtime.IBMRuntimeService.job() the params will no longer be returned from the API. They will instead be loaded loazily when they are actually needed in qiskit_ibm_runtime.RuntimeJob.inputs().

  • Added warning when the backend is not active in QiskitRuntimeService.run.

  • Support input of type CouplingMap when given as simulator option. Previously we supported, for example:

    options.simulator = {"coupling_map": [[0, 1], [1, 0]]}

    Now we also support the following:

    options.simulator = {"coupling_map": CouplingMap.from_line(10)}

Upgrade Notes

  • A default session is no longer open for you if you pass a backend name or backend instance to qiskit_ibm_runtime.Sampler or qiskit_ibm_runtime.Estimator constructors. The primitive will instead run without a session. In addition, you should now use the backend parameter to pass a backend name or instance instead of the session parameter (which can continue to be used to pass a session).

Deprecation Notes

  • Passing a backend name or backend instance to the session parameter when initializing a qiskit_ibm_runtime.Sampler or qiskit_ibm_runtime.Estimator has been deprecated. Please use the backend parameter instead. You can continue to pass a session using the session parameter.


New Features

  • Python 3.11 is now supported.

Upgrade Notes

  • Added error messages in case the user defines unsupported values for ‘max_execution_time’. Previously, this validation was done on the server side.

Bug Fixes

  • Added deserialization of the params of RuntimeJob.inputs. Previously, the circuits were returned in serialized format. Fixes issue #829.

  • Allow for users to retrieve all backends even if one of the backends has a missing configuration. The backend without a configuration will not be returned.


New Features

  • Added methods to validate input options to transpilation and environment options.

Upgrade Notes

  • When constructing a backend qiskit.transpiler.Target, faulty qubits and gates from the backend configuration will be filtered out.

Deprecation Notes

  • The deprecated arguments circuits, parameters, service, and skip_transpilation have been removed from Sampler.

    Similarly, the deprecated arguments circuits, observables, parameters, service, and skip_transpilation have been removed from Estimator.

    In QiskitRuntimeService, the auth parameter has been removed. Additionally, the instance, job_tags, and max_execution_time paramters have been removed from qiskit_ibm_runtime.QiskitRuntimeService.run(). They can be passed in through RuntimeOptions instead.

    Within RuntimeOptions, backend_name is no longer supported. Please use backend instead.

Bug Fixes

  • Fixed a bug where retrieving a job from a backend without noise_model or seed_simulator options would result in a key error.


Upgrade Notes

  • Added error messages in case the user defines unsupported values for ‘optimization_level’ or for ‘resilience_level’. Added validation checking for options given as input to resilience. Previously, this validation was done on the server side. By adding them on the client side, response will be much faster upon failure. The environment variable QISKIT_RUNTIME_SKIP_OPTIONS_VALIDATION is used to control validation. If set, validation will be skipped.

Bug Fixes

  • When creating an Option object and passing an input option to resilience_options, this option was included in resilience_options, but the other, default options were removed. This was fixed, so now inputs are handled correctly, like other option types.


New Features

  • Added a new argument called session_time to the program_run method and qiskit_ibm_runtime.RuntimeOptions. Now values entered by the user for session max_time will be sent to the server side as session_time. This allows users to specify different values for session max_time and max_execution_time.

  • Added the method target_history(). This method is similar to target(). The difference is that the new method enables the user to pass a datetime parameter, to retrieve historical data from the backend.

Upgrade Notes

  • Accept all options on given on level 1 and assign them to the appropriate hierarchical option type. For example, if the user provides options = {"shots": 10} as input to Sampler/Estimator, this will be interpreted as options = {"execution: {"shots": 10}}.

  • Added a user warning when the user passes an option that is not supported in Options.

Bug Fixes

  • Fixed a bug where the default values for optimization_level and for resilience_level were not being set correctly.

  • Fixed an issue where if no backend was selected, optimization_level and resilience_level would default to None, causing the job to fail.

  • Removed additional decomposition of BlueprintCircuits in the JSON encoder. This was introduced as a bugfix, but has since been fixed. Still doing the decomposition led to possible problems if the decomposed circuit was not in the correct basis set of the backend anymore.


Upgrade Notes

  • Allow the user to store account details in a file specified by the user in the parameter. filename. The default remains ~/.qiskit/qiskit-ibm.json. Example of usage: Ex:

                                      name = "my_account",
    service = QiskitRuntimeService(channel="ibm_quantum", 
                                   name = "my_account",)

Deprecation Notes

  • backend is no longer a supported option when using qiskit_ibm_runtime.Session.run(). Sessions do not support multiple cross backends. Additionally, an exception will be raised if a backend passed in through options does not match the original session backend in an active session.

Bug Fixes

  • ECRGate and CZGate mappings have been added to the Target constructor to fix a tranpile bug.

Other Notes

  • Since error messages from a failing job may be long, we shortened them so that they begin from the last Traceback in the message.