qiskit.transpiler.passes.ApplyLayout

class ApplyLayout(*args, **kwargs)

Transform a circuit with virtual qubits into a circuit with physical qubits.

Transforms a DAGCircuit with virtual qubits into a DAGCircuit with physical qubits by applying the Layout given in property_set. Requires either of passes to set/select Layout, e.g. SetLayout, TrivialLayout. Assumes the Layout has full physical qubits.

__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 ApplyLayout 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.

property 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.

property 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()

Return the name of the pass.

run(dag)

Run the ApplyLayout pass on dag.

Parameters

dag (DAGCircuit) – DAG to map.

Returns

A mapped DAG (with physical qubits).

Return type

DAGCircuit

Raises

TranspilerError – if no layout is found in property_set or no full physical qubits.