qml.qcut.tape_to_graph

tape_to_graph(tape)

Converts a quantum tape to a directed multigraph.

Note

This operation is designed for use as part of the circuit cutting workflow. Check out the qml.cut_circuit() transform for more details.

Parameters

tape (QuantumTape) – tape to be converted into a directed multigraph

Returns

a directed multigraph that captures the circuit structure of the input tape. The nodes of the graph are formatted as WrappedObj(op), where WrappedObj.obj is the operator.

Return type

nx.MultiDiGraph

Example

Consider the following tape:

ops = [
    qml.RX(0.4, wires=0),
    qml.RY(0.9, wires=0),
    qml.CNOT(wires=[0, 1]),
]
measurements = [qml.expval(qml.Z(1))]
tape = qml.tape.QuantumTape(ops,)

Its corresponding circuit graph can be found using

>>> qml.qcut.tape_to_graph(tape)
<networkx.classes.multidigraph.MultiDiGraph at 0x7fe41cbd7210>

code/api/pennylane.qcut.tape_to_graph

 

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