qiskit.transpiler.passes.CommutativeCancellation
class CommutativeCancellation(*args, **kwargs)
Cancel the redundant (self-adjoint) gates through commutation relations.
Pass for cancelling self-inverse gates/rotations. The cancellation utilizes the commutation relations in the circuit. Gates considered include:
H, X, Y, Z, CX, CY, CZ__init__
__init__()
Initialize self. See help(type(self)) for accurate signature.
Methods
__init__() | Initialize self. |
name() | Return the name of the pass. |
run(dag) | Run the CommutativeCancellation pass on dag. |
Attributes
is_analysis_pass | Check if the pass is an analysis pass. |
is_transformation_pass | Check if the pass is a transformation pass. |
is_analysis_pass
Check if the pass is an analysis pass.
If the pass is an AnalysisPass, that means that the pass can analyze the DAG and write the results of that analysis in the property set. Modifications on the DAG are not allowed by this kind of pass.
is_transformation_pass
Check if the pass is a transformation pass.
If the pass is a TransformationPass, that means that the pass can manipulate the DAG, but cannot modify the property set (but it can be read).
name
name()
Return the name of the pass.
run
run(dag)
Run the CommutativeCancellation pass on dag.
Parameters
dag (DAGCircuit) – the DAG to be optimized.
Returns
the optimized DAG.
Return type
Raises
TranspilerError – when the 1-qubit rotation gates are not found