Add proparty and setter functions for experiment_type

qiskit_experiments/framework/composite/batch_experiment.py

@@ -49,6 +49,7 @@ def __init__(
         backend: Optional[Backend] = None,
         flatten_results: bool = None,
         analysis: Optional[CompositeAnalysis] = None,
+        experiment_type: Optional[str] = None,
     ):
         """Initialize a batch experiment.
 
@@ -65,6 +66,9 @@ def __init__(
                       provided this will be initialized automatically from the
                       supplied experiments.
         """
+        # Experiment identification metadata
+        self._type = experiment_type if experiment_type else type(self).__name__
+
         if flatten_results is None:
             # Backward compatibility for 0.6
             # This if-clause will be removed in 0.7 and flatten_result=True is set in arguments.
@@ -89,6 +93,19 @@ def __init__(
             experiments, qubits, backend=backend, analysis=analysis, flatten_results=flatten_results
         )
 
+    @property
+    def experiment_type(self) -> str:
+        """Return experiment type."""
+        return self._type
+
+    @experiment_type.setter
+    def experiment_type(self, exp_type: str) -> None:
+        """Set the type for the experiment."""
+        if exp_type is not None:
+            self._type = exp_type
+        else:
+            self._type = type(self).__name__
+
     def circuits(self):
         return self._batch_circuits(to_transpile=False)
 

qiskit_experiments/framework/composite/parallel_experiment.py

@@ -49,6 +49,7 @@ def __init__(
         backend: Optional[Backend] = None,
         flatten_results: bool = None,
         analysis: Optional[CompositeAnalysis] = None,
+        experiment_type: Optional[str] = None,
     ):
         """Initialize the analysis object.
 
@@ -65,6 +66,9 @@ def __init__(
                       provided this will be initialized automatically from the
                       supplied experiments.
         """
+        # Experiment identification metadata
+        self._type = experiment_type if experiment_type else type(self).__name__
+
         if flatten_results is None:
             # Backward compatibility for 0.6
             # This if-clause will be removed in 0.7 and flatten_result=True is set in arguments.
@@ -82,6 +86,19 @@ def __init__(
             experiments, qubits, backend=backend, analysis=analysis, flatten_results=flatten_results
         )
 
+    @property
+    def experiment_type(self) -> str:
+        """Return experiment type."""
+        return self._type
+
+    @experiment_type.setter
+    def experiment_type(self, exp_type: str) -> None:
+        """Set the type for the experiment."""
+        if exp_type is not None:
+            self._type = exp_type
+        else:
+            self._type = type(self).__name__
+
     def circuits(self):
         return self._combined_circuits(device_layout=False)
 

test/framework/test_composite.py

@@ -44,6 +44,7 @@
 # pylint: disable=missing-raises-doc
 
 
+@ddt
 class TestComposite(QiskitExperimentsTestCase):
     """
     Test composite experiment behavior.
@@ -151,6 +152,29 @@ def test_roundtrip_serializable(self):
 
         self.assertRoundTripSerializable(exp)
 
+    @data(None, "Test")
+    def test_experiment_type(self, exp_type):
+        """Test the experiment_type setter for the parallel experiment and
+        batch experiment.
+        """
+        exp = FakeExperiment([0])
+
+        par_exp = ParallelExperiment([exp], flatten_results=False)
+        if exp_type is None:
+            exp_type = type(par_exp).__name__
+            self.assertEqual(par_exp.experiment_type, exp_type)
+        else:
+            par_exp.experiment_type = exp_type
+            self.assertEqual(par_exp.experiment_type, exp_type)
+
+        batch_exp = BatchExperiment([exp], flatten_results=False)
+        if exp_type is None:
+            exp_type = type(batch_exp).__name__
+            self.assertEqual(batch_exp.experiment_type, exp_type)
+        else:
+            batch_exp.experiment_type = exp_type
+            self.assertEqual(batch_exp.experiment_type, exp_type)
+
 
 @ddt
 class TestCompositeExperimentData(QiskitExperimentsTestCase):