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TrivialLayout

qiskit.transpiler.passes.TrivialLayout(*args, **kwargs) GitHub(opens in a new tab)

Bases: AnalysisPass

Choose a Layout by assigning n circuit qubits to device qubits 0, .., n-1.

A pass for choosing a Layout of a circuit onto a Coupling graph, using a simple round-robin order.

This pass associates a physical qubit (int) to each virtual qubit of the circuit (Qubit) in increasing order.

Does not assume any ancilla.

TrivialLayout initializer.

Parameters

coupling_map (Union[CouplingMap, Target]) – directed graph representing a coupling map.

Raises

TranspilerError – if invalid options


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

Returns

Optimized Qiskit IR and state of the workflow.

Return type

tuple(opens in a new tab)[Any(opens in a new tab), qiskit.passmanager.compilation_status.PassManagerState]

name

name()

Name of the pass.

Return type

str(opens in a new tab)

run

run(dag)

Run the TrivialLayout pass on dag.

Parameters

dag (DAGCircuit) – DAG to find layout for.

Raises

TranspilerError – if dag wider than the target backend

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

PassManagerState

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