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BlockCollapser

class BlockCollapser(dag)

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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

BlockCollapser.collapse_to_operation(blocks, collapse_fn)

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

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