def test_sample_counts_ghz(self):
"""Test sample_counts method for GHZ state"""
shots = 2000
threshold = 0.02 * shots
state = DensityMatrix(
(Statevector.from_label("000") + Statevector.from_label("111")) / np.sqrt(2)
)
state.seed(100)
# 3-qubit qargs
target = {"000": shots / 2, "111": shots / 2}
for qargs in [[0, 1, 2], [2, 1, 0], [1, 2, 0], [1, 0, 2]]:
with self.subTest(msg=f"counts (qargs={qargs})"):
counts = state.sample_counts(shots, qargs=qargs)
self.assertDictAlmostEqual(counts, target, threshold)
# 2-qubit qargs
target = {"00": shots / 2, "11": shots / 2}
for qargs in [[0, 1], [2, 1], [1, 2], [1, 2]]:
with self.subTest(msg=f"counts (qargs={qargs})"):
counts = state.sample_counts(shots, qargs=qargs)
self.assertDictAlmostEqual(counts, target, threshold)
# 1-qubit qargs
target = {"0": shots / 2, "1": shots / 2}
for qargs in [[0], [1], [2]]:
with self.subTest(msg=f"counts (qargs={qargs})"):
counts = state.sample_counts(shots, qargs=qargs)
self.assertDictAlmostEqual(counts, target, threshold)
def test_sample_memory_ghz(self):
"""Test sample_memory method for GHZ state"""
shots = 2000
state = DensityMatrix(
(Statevector.from_label("000") + Statevector.from_label("111")) / np.sqrt(2)
)
state.seed(100)
# 3-qubit qargs
target = {"000": shots / 2, "111": shots / 2}
for qargs in [[0, 1, 2], [2, 1, 0], [1, 2, 0], [1, 0, 2]]:
with self.subTest(msg=f"memory (qargs={qargs})"):
memory = state.sample_memory(shots, qargs=qargs)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(target))
# 2-qubit qargs
target = {"00": shots / 2, "11": shots / 2}
for qargs in [[0, 1], [2, 1], [1, 2], [1, 2]]:
with self.subTest(msg=f"memory (qargs={qargs})"):
memory = state.sample_memory(shots, qargs=qargs)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(target))
# 1-qubit qargs
target = {"0": shots / 2, "1": shots / 2}
for qargs in [[0], [1], [2]]:
with self.subTest(msg=f"memory (qargs={qargs})"):
memory = state.sample_memory(shots, qargs=qargs)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(target))
def test_sample_memory_w(self):
"""Test sample_memory method for W state"""
shots = 3000
state = DensityMatrix(
(Statevector.from_label('001') + Statevector.from_label('010') +
Statevector.from_label('100')) / np.sqrt(3))
state.seed(100)
target = {'001': shots / 3, '010': shots / 3, '100': shots / 3}
for qargs in [[0, 1, 2], [2, 1, 0], [1, 2, 0], [1, 0, 2]]:
with self.subTest(msg='memory (qargs={})'.format(qargs)):
memory = state.sample_memory(shots, qargs=qargs)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(target))
# 2-qubit qargs
target = {'00': shots / 3, '01': shots / 3, '10': shots / 3}
for qargs in [[0, 1], [2, 1], [1, 2], [1, 2]]:
with self.subTest(msg='memory (qargs={})'.format(qargs)):
memory = state.sample_memory(shots, qargs=qargs)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(target))
# 1-qubit qargs
target = {'0': 2 * shots / 3, '1': shots / 3}
for qargs in [[0], [1], [2]]:
with self.subTest(msg='memory (qargs={})'.format(qargs)):
memory = state.sample_memory(shots, qargs=qargs)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(target))
def test_sample_counts_w(self):
"""Test sample_counts method for W state"""
shots = 3000
threshold = 0.02 * shots
state = DensityMatrix(
(Statevector.from_label('001') + Statevector.from_label('010') +
Statevector.from_label('100')) / np.sqrt(3))
state.seed(100)
target = {'001': shots / 3, '010': shots / 3, '100': shots / 3}
for qargs in [[0, 1, 2], [2, 1, 0], [1, 2, 0], [1, 0, 2]]:
with self.subTest(msg='P({})'.format(qargs)):
counts = state.sample_counts(shots, qargs=qargs)
self.assertDictAlmostEqual(counts, target, threshold)
# 2-qubit qargs
target = {'00': shots / 3, '01': shots / 3, '10': shots / 3}
for qargs in [[0, 1], [2, 1], [1, 2], [1, 2]]:
with self.subTest(msg='P({})'.format(qargs)):
counts = state.sample_counts(shots, qargs=qargs)
self.assertDictAlmostEqual(counts, target, threshold)
# 1-qubit qargs
target = {'0': 2 * shots / 3, '1': shots / 3}
for qargs in [[0], [1], [2]]:
with self.subTest(msg='P({})'.format(qargs)):
counts = state.sample_counts(shots, qargs=qargs)
self.assertDictAlmostEqual(counts, target, threshold)
def test_reset_qutrit(self):
"""Test reset method for qutrit"""
state = DensityMatrix(np.diag([1, 1, 1]) / 3)
state.seed(200)
value = state.reset()
target = DensityMatrix(np.diag([1, 0, 0]))
self.assertEqual(value, target)
def test_sample_memory_qutrit(self):
"""Test sample_memory method for qutrit state"""
p = 0.3
shots = 1000
state = DensityMatrix(np.diag([p, 0, 1 - p]))
state.seed(100)
with self.subTest(msg="memory"):
memory = state.sample_memory(shots)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), {"0", "2"})
def test_sample_measure_ghz(self):
"""Test sample measure method for GHZ state"""
shots = 2000
threshold = 0.02 * shots
state = DensityMatrix(
(Statevector.from_label('000') + Statevector.from_label('111')) /
np.sqrt(2))
state.seed(100)
# 3-qubit qargs
target = {'000': shots / 2, '111': shots / 2}
for qargs in [[0, 1, 2], [2, 1, 0], [1, 2, 0], [1, 0, 2]]:
with self.subTest(msg='counts (qargs={})'.format(qargs)):
counts = state.sample_measure(qargs=qargs, shots=shots)
self.assertDictAlmostEqual(counts, target, threshold)
with self.subTest(msg='memory (qargs={})'.format(qargs)):
memory = state.sample_measure(qargs=qargs,
shots=shots,
memory=True)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(target))
# 2-qubit qargs
target = {'00': shots / 2, '11': shots / 2}
for qargs in [[0, 1], [2, 1], [1, 2], [1, 2]]:
with self.subTest(msg='counts (qargs={})'.format(qargs)):
counts = state.sample_measure(qargs=qargs, shots=shots)
self.assertDictAlmostEqual(counts, target, threshold)
with self.subTest(msg='memory (qargs={})'.format(qargs)):
memory = state.sample_measure(qargs=qargs,
shots=shots,
memory=True)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(target))
# 1-qubit qargs
target = {'0': shots / 2, '1': shots / 2}
for qargs in [[0], [1], [2]]:
with self.subTest(msg='counts (qargs={})'.format(qargs)):
counts = state.sample_measure(qargs=qargs, shots=shots)
self.assertDictAlmostEqual(counts, target, threshold)
with self.subTest(msg='memory (qargs={})'.format(qargs)):
memory = state.sample_measure(qargs=qargs,
shots=shots,
memory=True)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(target))
def test_sample_counts_qutrit(self):
"""Test sample_counts method for qutrit state"""
p = 0.3
shots = 1000
threshold = 0.03 * shots
state = DensityMatrix(np.diag([p, 0, 1 - p]))
state.seed(100)
with self.subTest(msg="counts"):
target = {"0": shots * p, "2": shots * (1 - p)}
counts = state.sample_counts(shots=shots)
self.assertDictAlmostEqual(counts, target, threshold)
def test_sample_measure_qutrit(self):
"""Test sample measure method for qutrit state"""
p = 0.3
shots = 1000
threshold = 0.02 * shots
state = DensityMatrix(np.diag([p, 0, 1 - p]))
state.seed(100)
with self.subTest(msg='counts'):
target = {'0': shots * p, '2': shots * (1 - p)}
counts = state.sample_measure(shots=shots)
self.assertDictAlmostEqual(counts, target, threshold)
with self.subTest(msg='memory'):
memory = state.sample_measure(shots=shots, memory=True)
self.assertEqual(len(memory), shots)
self.assertEqual(set(memory), set(['0', '2']))