BlockCollapser

class BlockCollapser(dag)

Bases: object

Class to consolidate a given block from the dag into a single node

This class implements various strategies of consolidating blocks of nodes in a DAG (direct acyclic graph). It works both with the DAGCircuit and DAGDependency DAG representations.

Parameters

dag (Union[DAGCircuit, DAGDependency]) – The input DAG.

Methods

collapse_to_operation

For each block, constructs a quantum circuit containing instructions in the block, then uses collapse_fn to collapse this circuit into a single operation.