Created
June 22, 2018 13:59
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A script to illustrate the issue 593 of QISKit
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# ====================================================================== | |
# Copyright CERFACS (February 2018) | |
# Contributor: Adrien Suau (suau@cerfacs.fr) | |
# | |
# This software is governed by the CeCILL-B license under French law and | |
# abiding by the rules of distribution of free software. You can use, | |
# modify and/or redistribute the software under the terms of the | |
# CeCILL-B license as circulated by CEA, CNRS and INRIA at the following | |
# URL "http://www.cecill.info". | |
# | |
# As a counterpart to the access to the source code and rights to copy, | |
# modify and redistribute granted by the license, users are provided | |
# only with a limited warranty and the software's author, the holder of | |
# the economic rights, and the successive licensors have only limited | |
# liability. | |
# | |
# In this respect, the user's attention is drawn to the risks associated | |
# with loading, using, modifying and/or developing or reproducing the | |
# software by the user in light of its specific status of free software, | |
# that may mean that it is complicated to manipulate, and that also | |
# therefore means that it is reserved for developers and experienced | |
# professionals having in-depth computer knowledge. Users are therefore | |
# encouraged to load and test the software's suitability as regards | |
# their requirements in conditions enabling the security of their | |
# systems and/or data to be ensured and, more generally, to use and | |
# operate it in the same conditions as regards security. | |
# | |
# The fact that you are presently reading this means that you have had | |
# knowledge of the CeCILL-B license and that you accept its terms. | |
# ====================================================================== | |
import qiskit | |
import Qconfig | |
from itertools import count | |
qiskit.register(Qconfig.APItoken, Qconfig.config["url"]) | |
ibmqx5 = qiskit.get_backend('ibmqx5') | |
with open('4x4.qasm', 'r') as qasm_file: | |
qasm_str = qasm_file.read() | |
full_basis = ('id,u0,u1,u2,u3,x,y,z,h,s,sdg,t,tdg,rx,ry,rz,' | |
'cx,cy,cz,ch,crz,cu1,cu3,swap,ccx').split(',') | |
# Parse the code to an AST | |
ast = qiskit.qasm.Qasm(data=qasm_str).parse() | |
# Unroll this AST and use the QuantumCircuit backend to represent the OpenQASM program | |
# as a QuantumCircuit | |
unroller = qiskit.unroll.Unroller(ast, qiskit.unroll.CircuitBackend(full_basis)) | |
unroller.execute() | |
try: | |
for i in count(0): | |
print("Compilation number {}...".format(i)) | |
qiskit.compile(unroller.backend.circuit, ibmqx5) | |
except TypeError as e: | |
print("The error happened!") | |
raise e |
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