def test_circuit_multi(self):
"""Test circuit multi regs declared at start.
"""
qreg0 = QuantumRegister(2, 'q0')
creg0 = ClassicalRegister(2, 'c0')
qreg1 = QuantumRegister(2, 'q1')
creg1 = ClassicalRegister(2, 'c1')
circ = QuantumCircuit(qreg0, qreg1)
circ.x(qreg0[1])
circ.x(qreg1[0])
meas = QuantumCircuit(qreg0, qreg1, creg0, creg1)
meas.measure(qreg0, creg0)
meas.measure(qreg1, creg1)
qc = circ + meas
backend_sim = Simulators.get_backend('qasm_simulator')
qobj_qc = compile(qc, backend_sim, seed_mapper=34342)
qobj_circ = compile(circ, backend_sim, seed_mapper=3438)
result = backend_sim.run(qobj_qc).result()
counts = result.get_counts(qc)
backend_sim = LegacySimulators.get_backend('qasm_simulator')
result = backend_sim.run(qobj_qc).result()
counts_py = result.get_counts(qc)
target = {'01 10': 1024}
backend_sim = LegacySimulators.get_backend('statevector_simulator')
result = backend_sim.run(qobj_circ).result()
state = result.get_statevector(circ)
backend_sim = Simulators.get_backend('statevector_simulator')
result = backend_sim.run(qobj_circ).result()
state_py = result.get_statevector(circ)
backend_sim = Simulators.get_backend('unitary_simulator')
result = backend_sim.run(qobj_circ).result()
unitary = result.get_unitary(circ)
self.assertEqual(counts, target)
self.assertEqual(counts_py, target)
self.assertAlmostEqual(state_fidelity(basis_state('0110', 4), state),
1.0,
places=7)
self.assertAlmostEqual(state_fidelity(basis_state('0110', 4),
state_py),
1.0,
places=7)
self.assertAlmostEqual(process_fidelity(
Pauli(label='IXXI').to_matrix(), unitary),
1.0,
places=7)
def test_get_backend(self):
"""Test get backends.
If all correct should return a name the same as input.
"""
backend = Simulators.backends(name='qasm_simulator')[0]
self.assertEqual(backend.name(), 'qasm_simulator')
def _tomography_test_data(circuit, qr, cr, tomoset, shots):
tomo_circs = tomo.create_tomography_circuits(circuit, qr, cr, tomoset)
result = execute(tomo_circs,
Simulators.get_backend('qasm_simulator'),
shots=shots,
seed=42).result()
data = tomo.tomography_data(result, circuit.name, tomoset)
return tomo.fit_tomography_data(data)
def test_qobj_to_circuits_single_no_qasm(self):
"""Check that qobj_to_circuits's result matches the qobj ini."""
backend = Simulators.get_backend('qasm_simulator')
qobj_in = compile(self.circuit, backend, pass_manager=PassManager())
for i in qobj_in.experiments:
del i.header.compiled_circuit_qasm
out_circuit = qobj_to_circuits(qobj_in)
self.assertEqual(circuit_to_dag(out_circuit[0]), self.dag)
def test_random_state_circuit(self):
state = random_state(3)
q = QuantumRegister(3)
qc = QuantumCircuit(q)
qc.initialize(state, [q[0], q[1], q[2]])
backend = Simulators.get_backend('statevector_simulator')
qc_state = execute(qc, backend).result().get_statevector(qc)
self.assertAlmostEqual(state_fidelity(qc_state, state), 1.0, places=7)
def test_builtin_simulators_backend_properties(self):
"""Test backend properties.
If all correct should pass the validation.
"""
simulators = Simulators.backends()
for backend in simulators:
properties = backend.properties()
self.assertEqual(properties, None)
def test_circuit_multi_case2(self):
"""Test circuit multi regs declared at start.
"""
qreg0 = QuantumRegister(2, 'q0')
creg0 = ClassicalRegister(2, 'c0')
qreg1 = QuantumRegister(2, 'q1')
creg1 = ClassicalRegister(2, 'c1')
circ2 = QuantumCircuit()
circ2.add_register(qreg0)
circ2.add_register(qreg1)
circ2.x(qreg0[1])
circ2.x(qreg1[0])
meas2 = QuantumCircuit()
meas2.add_register(qreg0)
meas2.add_register(qreg1)
meas2.add_register(creg0)
meas2.add_register(creg1)
meas2.measure(qreg0, creg0)
meas2.measure(qreg1, creg1)
qc2 = circ2 + meas2
backend_sim = Simulators.get_backend('statevector_simulator')
result = execute(circ2, backend_sim).result()
state = result.get_statevector(circ2)
backend_sim = Simulators.get_backend('qasm_simulator')
result = execute(qc2, backend_sim).result()
counts = result.get_counts(qc2)
backend_sim = Simulators.get_backend('unitary_simulator')
result = execute(circ2, backend_sim).result()
unitary = result.get_unitary(circ2)
target = {'01 10': 1024}
self.assertEqual(target, counts)
self.assertAlmostEqual(state_fidelity(basis_state('0110', 4), state),
1.0,
places=7)
self.assertAlmostEqual(process_fidelity(
Pauli(label='IXXI').to_matrix(), unitary),
1.0,
places=7)
def setUp(self):
qr = qiskit.QuantumRegister(1)
cr = qiskit.ClassicalRegister(1)
self._qc1 = qiskit.QuantumCircuit(qr, cr, name='qc1')
self._qc2 = qiskit.QuantumCircuit(qr, cr, name='qc2')
self._qc1.measure(qr[0], cr[0])
self._qc2.x(qr[0])
self._qc2.measure(qr[0], cr[0])
self.backend = Simulators.get_backend('qasm_simulator')
self._result1 = qiskit.execute(self._qc1, self.backend).result()
self._result2 = qiskit.execute(self._qc2, self.backend).result()
def test_builtin_unitary_simulator_py(self):
backend = Simulators.get_backend('unitary_simulator')
qobj = compile(self.circuits, backend=backend)
exp = qobj.experiments[0]
c_qasm = exp.header.compiled_circuit_qasm
self.assertIn(self.qr_name, map(lambda x: x[0],
exp.header.qubit_labels))
self.assertIn(self.qr_name, c_qasm)
self.assertIn(self.cr_name, map(lambda x: x[0],
exp.header.clbit_labels))
self.assertIn(self.cr_name, c_qasm)
def test_job_monitor(self):
"""Test job_monitor"""
qreg = QuantumRegister(2)
creg = ClassicalRegister(2)
qc = QuantumCircuit(qreg, creg)
qc.h(qreg[0])
qc.cx(qreg[0], qreg[1])
qc.measure(qreg, creg)
backend = Simulators.get_backend('qasm_simulator')
job_sim = execute([qc] * 10, backend)
qiskit.tools.job_monitor(job_sim)
self.assertEqual(job_sim.status().name, 'DONE')
def test_builtin_simulators_backend_status(self):
"""Test backend_status.
If all correct should pass the validation.
"""
schema_path = self._get_resource_path(
'backend_status_schema.json', path=Path.SCHEMAS)
with open(schema_path, 'r') as schema_file:
schema = json.load(schema_file)
for backend in Simulators.backends():
status = backend.status()
jsonschema.validate(status.to_dict(), schema)
def test_qobj_to_circuit_with_sim_instructions(self):
"""Check qobj_to_circuit result with asimulator instruction."""
backend = Simulators.get_backend('qasm_simulator')
qr = QuantumRegister(3)
cr = ClassicalRegister(3)
circuit = QuantumCircuit(qr, cr)
circuit.ccx(qr[0], qr[1], qr[2])
circuit.snapshot(1)
circuit.measure(qr, cr)
dag = circuit_to_dag(circuit)
qobj_in = compile(circuit, backend, pass_manager=PassManager())
out_circuit = qobj_to_circuits(qobj_in)
self.assertEqual(circuit_to_dag(out_circuit[0]), dag)
def test_builtin_simulators_backend_configuration(self):
"""Test backend configuration.
If all correct should pass the validation.
"""
schema_path = self._get_resource_path(
'backend_configuration_schema.json', path=Path.SCHEMAS)
with open(schema_path, 'r') as schema_file:
schema = json.load(schema_file)
builtin_simulators = Simulators.backends()
for backend in builtin_simulators:
configuration = backend.configuration()
jsonschema.validate(configuration.to_dict(), schema)
def setUp(self):
super().setUp()
self._testing_device = os.getenv('IBMQ_QOBJ_DEVICE', None)
self._qe_token = os.getenv('IBMQ_TOKEN', None)
self._qe_url = os.getenv('IBMQ_QOBJ_URL')
if not self._testing_device or not self._qe_token or not self._qe_url:
self.skipTest("No credentials or testing device available for "
"testing Qobj capabilities.")
IBMQ.enable_account(self._qe_token, self._qe_url)
self._local_backend = Simulators.get_backend('qasm_simulator')
self._remote_backend = IBMQ.get_backend(self._testing_device)
self.log.info('Remote backend: %s', self._remote_backend.name())
self.log.info('Local backend: %s', self._local_backend.name())
def test_extend_circuit_different_registers(self):
"""Test extending a circuit with different registers.
"""
qr = QuantumRegister(2)
cr = ClassicalRegister(2)
qc1 = QuantumCircuit(qr)
qc1.x(qr)
qc2 = QuantumCircuit(qr, cr)
qc2.measure(qr, cr)
qc1 += qc2
backend = Simulators.get_backend('qasm_simulator')
shots = 1024
result = execute(qc1, backend=backend, shots=shots, seed=78).result()
counts = result.get_counts()
target = {'11': shots}
self.assertEqual(counts, target)
def test_qobj_to_circuit_with_parameters(self):
"""Check qobj_to_circuit result with a gate that uses parameters."""
backend = Simulators.get_backend('qasm_simulator')
qreg1 = QuantumRegister(2)
qreg2 = QuantumRegister(3)
creg1 = ClassicalRegister(2)
creg2 = ClassicalRegister(2)
circuit_b = QuantumCircuit(qreg1, qreg2, creg1, creg2)
circuit_b.x(qreg1)
circuit_b.h(qreg2)
circuit_b.u2(0.2, 0.57, qreg2[1])
circuit_b.measure(qreg1, creg1)
circuit_b.measure(qreg2[0], creg2[1])
qobj = compile(circuit_b, backend, pass_manager=PassManager())
out_circuit = qobj_to_circuits(qobj)
self.assertEqual(circuit_to_dag(out_circuit[0]),
circuit_to_dag(circuit_b))
def test_qobj_to_circuits_multiple(self):
"""Check that qobj_to_circuits's result with multiple circuits"""
backend = Simulators.get_backend('qasm_simulator')
qreg1 = QuantumRegister(2)
qreg2 = QuantumRegister(3)
creg1 = ClassicalRegister(2)
creg2 = ClassicalRegister(2)
circuit_b = QuantumCircuit(qreg1, qreg2, creg1, creg2)
circuit_b.x(qreg1)
circuit_b.h(qreg2)
circuit_b.measure(qreg1, creg1)
circuit_b.measure(qreg2[0], creg2[1])
qobj = compile([self.circuit, circuit_b],
backend,
pass_manager=PassManager())
dag_list = [circuit_to_dag(x) for x in qobj_to_circuits(qobj)]
self.assertEqual(dag_list, [self.dag, circuit_to_dag(circuit_b)])
def test_statevector(self):
"""statevector from a bell state"""
qr = qiskit.QuantumRegister(2)
circuit = qiskit.QuantumCircuit(qr)
circuit.h(qr[0])
circuit.cx(qr[0], qr[1])
sim_cpp = LegacySimulators.get_backend('statevector_simulator')
sim_py = Simulators.get_backend('statevector_simulator')
result_cpp = execute(circuit, sim_cpp).result()
result_py = execute(circuit, sim_py).result()
statevector_cpp = result_cpp.get_statevector()
statevector_py = result_py.get_statevector()
fidelity = state_fidelity(statevector_cpp, statevector_py)
self.assertGreater(
fidelity, self._desired_fidelity,
"cpp vs. py statevector has low fidelity{0:.2g}.".format(fidelity))
def test_qasm(self):
"""counts from a GHZ state"""
qr = qiskit.QuantumRegister(3)
cr = qiskit.ClassicalRegister(3)
circuit = qiskit.QuantumCircuit(qr, cr)
circuit.h(qr[0])
circuit.cx(qr[0], qr[1])
circuit.cx(qr[1], qr[2])
circuit.measure(qr, cr)
sim_cpp = LegacySimulators.get_backend('qasm_simulator')
sim_py = Simulators.get_backend('qasm_simulator')
shots = 2000
result_cpp = execute(circuit, sim_cpp, shots=shots).result()
result_py = execute(circuit, sim_py, shots=shots).result()
counts_cpp = result_cpp.get_counts()
counts_py = result_py.get_counts()
self.assertDictAlmostEqual(counts_cpp, counts_py, shots * 0.08)
def test_extend_circuit(self):
"""Test extending a circuit with same registers.
"""
qr = QuantumRegister(2)
cr = ClassicalRegister(2)
qc1 = QuantumCircuit(qr, cr)
qc2 = QuantumCircuit(qr, cr)
qc1.h(qr[0])
qc1.measure(qr[0], cr[0])
qc2.measure(qr[1], cr[1])
qc1 += qc2
backend = Simulators.get_backend('qasm_simulator')
shots = 1024
result = execute(qc1, backend=backend, shots=shots, seed=78).result()
counts = result.get_counts()
target = {'00': shots / 2, '01': shots / 2}
threshold = 0.04 * shots
self.assertDictAlmostEqual(counts, target, threshold)
def test_change_qobj_after_compile(self):
"""Test modifying Qobj parameters after compile."""
qr = QuantumRegister(3)
cr = ClassicalRegister(3)
qc1 = QuantumCircuit(qr, cr)
qc2 = QuantumCircuit(qr, cr)
qc1.h(qr[0])
qc1.cx(qr[0], qr[1])
qc1.cx(qr[0], qr[2])
qc2.h(qr)
qc1.measure(qr, cr)
qc2.measure(qr, cr)
circuits = [qc1, qc2]
shots = 1024
backend = Simulators.get_backend('qasm_simulator')
config = {'seed': 10, 'shots': 1, 'xvals': [1, 2, 3, 4]}
qobj1 = compile(circuits,
backend=backend,
shots=shots,
seed=88,
config=config)
qobj1.experiments[0].config.shots = 50
qobj1.experiments[0].config.xvals = [1, 1, 1]
config['shots'] = 1000
config['xvals'][0] = 'only for qobj2'
qobj2 = compile(circuits,
backend=backend,
shots=shots,
seed=88,
config=config)
self.assertTrue(qobj1.experiments[0].config.shots == 50)
self.assertTrue(qobj1.experiments[1].config.shots == 1)
self.assertTrue(qobj1.experiments[0].config.xvals == [1, 1, 1])
self.assertTrue(qobj1.experiments[1].config.xvals == [1, 2, 3, 4])
self.assertTrue(qobj1.config.shots == 1024)
self.assertTrue(qobj2.experiments[0].config.shots == 1000)
self.assertTrue(qobj2.experiments[1].config.shots == 1000)
self.assertTrue(
qobj2.experiments[0].config.xvals == ['only for qobj2', 2, 3, 4])
self.assertTrue(
qobj2.experiments[1].config.xvals == ['only for qobj2', 2, 3, 4])
def test_qasm_reset_measure(self):
"""counts from a qasm program with measure and reset in the middle"""
qr = qiskit.QuantumRegister(3)
cr = qiskit.ClassicalRegister(3)
circuit = qiskit.QuantumCircuit(qr, cr)
circuit.h(qr[0])
circuit.cx(qr[0], qr[1])
circuit.reset(qr[0])
circuit.cx(qr[1], qr[2])
circuit.t(qr)
circuit.measure(qr[1], cr[1])
circuit.h(qr[2])
circuit.measure(qr[2], cr[2])
sim_cpp = LegacySimulators.get_backend('qasm_simulator')
sim_py = Simulators.get_backend('qasm_simulator')
shots = 1000
result_cpp = execute(circuit, sim_cpp, shots=shots, seed=1).result()
result_py = execute(circuit, sim_py, shots=shots, seed=1).result()
counts_cpp = result_cpp.get_counts()
counts_py = result_py.get_counts()
self.assertDictAlmostEqual(counts_cpp, counts_py, shots * 0.06)
def test_average_data(self):
"""Test average_data."""
qr = qiskit.QuantumRegister(2)
cr = qiskit.ClassicalRegister(2)
qc = qiskit.QuantumCircuit(qr, cr, name="qc")
qc.h(qr[0])
qc.cx(qr[0], qr[1])
qc.measure(qr[0], cr[0])
qc.measure(qr[1], cr[1])
shots = 10000
backend = Simulators.get_backend('qasm_simulator')
result = qiskit.execute(qc, backend, shots=shots).result()
counts = result.get_counts(qc)
observable = {"00": 1, "11": 1, "01": -1, "10": -1}
mean_zz = average_data(counts=counts, observable=observable)
observable = {"00": 1, "11": -1, "01": 1, "10": -1}
mean_zi = average_data(counts, observable)
observable = {"00": 1, "11": -1, "01": -1, "10": 1}
mean_iz = average_data(counts, observable)
self.assertAlmostEqual(mean_zz, 1, places=1)
self.assertAlmostEqual(mean_zi, 0, places=1)
self.assertAlmostEqual(mean_iz, 0, places=1)
q = QuantumRegister(2)
# Create a Classical Register with 2 bits.
c = ClassicalRegister(2)
# Create a Quantum Circuit
qc = QuantumCircuit(q, c)
# Add a H gate on qubit 0, putting this qubit in superposition.
qc.h(q[0])
# Add a CX (CNOT) gate on control qubit 0 and target qubit 1, putting
# the qubits in a Bell state.
qc.cx(q[0], q[1])
# Add a Measure gate to see the state.
qc.measure(q, c)
# See a list of available local simulators
print("Aer backends: ", Simulators.backends())
backend_sim = Simulators.get_backend('qasm_simulator')
# Compile and run the Quantum circuit on a simulator backend
job_sim = execute(qc, backend_sim)
result_sim = job_sim.result()
# Show the results
print("simulation: ", result_sim)
print(result_sim.get_counts(qc))
# see a list of available remote backends
ibmq_backends = IBMQ.backends()
print("Remote backends: ", ibmq_backends)
# Compile and run the Quantum Program on a real device backend
def setUp(self):
self.seed = 42
self.backend = Simulators.get_backend("qasm_simulator")
def test_aliases_return_empty_list(self):
"""Test backends() return an empty list if name is unknown."""
self.assertEqual(Simulators.backends("bad_name"), [])
def test_qobj_to_circuits_single(self):
"""Check that qobj_to_circuits's result matches the qobj ini."""
backend = Simulators.get_backend('qasm_simulator')
qobj_in = compile(self.circuit, backend, pass_manager=PassManager())
out_circuit = qobj_to_circuits(qobj_in)
self.assertEqual(circuit_to_dag(out_circuit[0]), self.dag)
clbit_reg = ClassicalRegister(2)
# making first circuit: bell state
qc1 = QuantumCircuit(qubit_reg, clbit_reg)
qc1.h(qubit_reg[0])
qc1.cx(qubit_reg[0], qubit_reg[1])
qc1.measure(qubit_reg, clbit_reg)
# making another circuit: superpositions
qc2 = QuantumCircuit(qubit_reg, clbit_reg)
qc2.h(qubit_reg)
qc2.measure(qubit_reg, clbit_reg)
# setting up the backend
print("(AER Backends)")
print(Simulators.backends())
# running the job
job_sim = execute([qc1, qc2], Simulators.get_backend('qasm_simulator'))
sim_result = job_sim.result()
# Show the results
print("simulation: ", sim_result)
print(sim_result.get_counts(qc1))
print(sim_result.get_counts(qc2))
# see a list of available remote backends
print("\n(IBMQ Backends)")
print(IBMQ.backends())
# Compile and run on a real device backend
clbit_reg = ClassicalRegister(2, name='c')
# Making first circuit: bell state
qc1 = QuantumCircuit(qubit_reg, clbit_reg, name="bell")
qc1.h(qubit_reg[0])
qc1.cx(qubit_reg[0], qubit_reg[1])
qc1.measure(qubit_reg, clbit_reg)
# Making another circuit: superpositions
qc2 = QuantumCircuit(qubit_reg, clbit_reg, name="superposition")
qc2.h(qubit_reg)
qc2.measure(qubit_reg, clbit_reg)
# Setting up the backend
print("(Aer Backends)")
for backend in Simulators.backends():
print(backend.status())
my_backend = Simulators.get_backend('local_qasm_simulator')
print("(QASM Simulator configuration) ")
pprint.pprint(my_backend.configuration())
print("(QASM Simulator properties) ")
pprint.pprint(my_backend.properties())
print("\n(IMQ Backends)")
for backend in IBMQ.backends():
print(backend.status())
# select least busy available device and execute.
least_busy_device = least_busy(IBMQ.backends(simulator=False))
print("Running on current least busy device: ", least_busy_device)
print("(with configuration) ")
"""
Example on how to load a file into a QuantumCircuit
"""
from qiskit import QuantumCircuit
from qiskit import QiskitError, execute, Simulators
try:
circ = QuantumCircuit.from_qasm_file(
"examples/qasm/entangled_registers.qasm")
print(circ.draw())
# See the backend
sim_backend = Simulators.get_backend('qasm_simulator')
# Compile and run the Quantum circuit on a local simulator backend
job_sim = execute(circ, sim_backend)
sim_result = job_sim.result()
# Show the results
print("simulation: ", sim_result)
print(sim_result.get_counts(circ))
except QiskitError as ex:
print('There was an internal Qiskit error. Error = {}'.format(ex))