Use allow_unknown_parameters in SparseLabelOp.assign_parameters

qiskit_nature/second_q/operators/sparse_label_op.py

@@ -1,6 +1,6 @@
 # This code is part of Qiskit.
 #
-# (C) Copyright IBM 2022.
+# (C) Copyright IBM 2022, 2023.
 #
 # This code is licensed under the Apache License, Version 2.0. You may
 # obtain a copy of this license in the LICENSE.txt file in the root directory
@@ -511,11 +511,7 @@ def assign_parameters(self, parameters: Mapping[ParameterExpression, _TCoeff]) -
             A new operator with the parameters assigned.
         """
         data = {
-            # TODO use this line once
-            # https://github.com/Qiskit/qiskit-terra/pull/9304
-            # is merged:
-            # key: value.bind(parameters, allow_unknown_parameters=True)
-            key: value.bind({k: v for k, v in parameters.items() if k in value.parameters})
+            key: value.bind(parameters, allow_unknown_parameters=True)
             if isinstance(value, ParameterExpression)
             else value
             for key, value in self._data.items()

requirements.txt

@@ -1,4 +1,4 @@
-qiskit-terra>=0.22.*
+qiskit-terra>=0.23.*
 scipy>=1.4
 numpy>=1.17
 psutil>=5

test/second_q/operators/test_sparse_label_op.py

@@ -1,6 +1,6 @@
 # This code is part of Qiskit.
 #
-# (C) Copyright IBM 2022.
+# (C) Copyright IBM 2022, 2023.
 #
 # This code is licensed under the Apache License, Version 2.0. You may
 # obtain a copy of this license in the LICENSE.txt file in the root directory
@@ -426,6 +426,10 @@ def test_assign_parameters(self):
         assigned_op = op.assign_parameters({a: 1})
         self.assertEqual(assigned_op, DummySparseLabelOp({"+_0 -_1": 2, "+_1 -_0": b}))
 
+        op = DummySparseLabelOp({"+_0 -_1": a + 1})
+        assigned_op = op.assign_parameters({b: 1})
+        self.assertEqual(assigned_op, op)
+
     def test_round(self):
         """test round function"""
         with self.subTest("round just real part"):