/
dagdependency_to_circuit.py
42 lines (33 loc) · 1.34 KB
/
dagdependency_to_circuit.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
# This code is part of Qiskit.
#
# (C) Copyright IBM 2020.
#
# This code is licensed under the Apache License, Version 2.0. You may
# obtain a copy of this license in the LICENSE.txt file in the root directory
# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
#
# Any modifications or derivative works of this code must retain this
# copyright notice, and modified files need to carry a notice indicating
# that they have been altered from the originals.
"""Helper function for converting a dag dependency to a circuit"""
from qiskit.circuit import QuantumCircuit, CircuitInstruction
def dagdependency_to_circuit(dagdependency):
"""Build a ``QuantumCircuit`` object from a ``DAGDependency``.
Args:
dagdependency (DAGDependency): the input dag.
Return:
QuantumCircuit: the circuit representing the input dag dependency.
"""
name = dagdependency.name or None
circuit = QuantumCircuit(
dagdependency.qubits,
dagdependency.clbits,
*dagdependency.qregs.values(),
*dagdependency.cregs.values(),
name=name,
)
circuit.metadata = dagdependency.metadata
circuit.calibrations = dagdependency.calibrations
for node in dagdependency.topological_nodes():
circuit._append(CircuitInstruction(node.op.copy(), node.qargs, node.cargs))
return circuit