EnlargeWithAncilla
class qiskit.transpiler.passes.EnlargeWithAncilla(*args, **kwargs)
Bases: TransformationPass
Extend the dag with virtual qubits that are in layout but not in the circuit yet.
Extend the DAG circuit with new virtual qubits (ancilla) that are specified in the layout, but not present in the circuit. Which qubits to add are previously allocated in the layout property, by a previous pass.
Attributes
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).
Methods
execute
execute(passmanager_ir, state, callback=None)
Execute optimization task for input Qiskit IR.
Parameters
- passmanager_ir (Any) – Qiskit IR to optimize.
- state (PassManagerState) – State associated with workflow execution by the pass manager itself.
- callback (Callable | None) – A callback function which is caller per execution of optimization task.
Returns
Optimized Qiskit IR and state of the workflow.
Return type
tuple[Any, qiskit.passmanager.compilation_status.PassManagerState]
name
run
run(dag)
Run the EnlargeWithAncilla pass on dag.
Parameters
dag (DAGCircuit) – DAG to extend.
Returns
An extended DAG.
Return type
Raises
TranspilerError – If there is no layout in the property set or not set at init time.
update_status
update_status(state, run_state)
Update workflow status.
Parameters
- state (PassManagerState) – Pass manager state to update.
- run_state (RunState) – Completion status of current task.
Returns
Updated pass manager state.
Return type