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Código fonte de qiskit.converters.circuit_to_dag

# This code is part of Qiskit.
#
# (C) Copyright IBM 2017, 2018.
#
# 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 circuit to a dag"""
import copy

from qiskit.dagcircuit.dagcircuit import DAGCircuit


[documentos]def circuit_to_dag(circuit): """Build a ``DAGCircuit`` object from a ``QuantumCircuit``. Args: circuit (QuantumCircuit): the input circuit. Return: DAGCircuit: the DAG representing the input circuit. Example: .. code-block:: from qiskit import QuantumRegister, ClassicalRegister, QuantumCircuit from qiskit.dagcircuit import DAGCircuit from qiskit.converters import circuit_to_dag q = QuantumRegister(3, 'q') c = ClassicalRegister(3, 'c') circ = QuantumCircuit(q, c) circ.h(q[0]) circ.cx(q[0], q[1]) circ.measure(q[0], c[0]) circ.rz(0.5, q[1]).c_if(c, 2) dag = circuit_to_dag(circ) """ dagcircuit = DAGCircuit() dagcircuit.name = circuit.name dagcircuit.global_phase = circuit.global_phase dagcircuit.calibrations = circuit.calibrations dagcircuit.metadata = circuit.metadata dagcircuit.add_qubits(circuit.qubits) dagcircuit.add_clbits(circuit.clbits) for register in circuit.qregs: dagcircuit.add_qreg(register) for register in circuit.cregs: dagcircuit.add_creg(register) for instruction in circuit.data: dagcircuit.apply_operation_back( copy.deepcopy(instruction.operation), instruction.qubits, instruction.clbits ) dagcircuit.duration = circuit.duration dagcircuit.unit = circuit.unit return dagcircuit