def thermal_state(self):
"""Test the thermal state is correct."""
self.logTestName()
nbar = 0.5342
means, cov = thermal_state(nbar, hbar=hbar)
self.assertAllAlmostEqual(means, np.zeros([2]), delta=self.tol)
self.assertTrue(np.all((cov.diag * 2 / hbar - 1) / 2 == nbar))
def test_apply_errors(self):
"""Test that apply fails for incorrect state preparation"""
self.logTestName()
with self.assertRaisesRegex(ValueError, 'incorrect size for the number of subsystems'):
p = [thermal_state(0.5)]
self.dev.apply('GaussianState', wires=[0], par=[p])
def test_apply_errors(self, gaussian_dev):
"""Test that apply fails for incorrect state preparation"""
with pytest.raises(ValueError, match='incorrect size for the number of subsystems'):
p = [thermal_state(0.5)]
gaussian_dev.apply('GaussianState', wires=[0], par=[p])
with pytest.raises(ValueError, match='Incorrect number of subsystems'):
p = U
gaussian_dev.apply('Interferometer', wires=[0], par=[p])
with pytest.raises(ValueError, match="Invalid target subsystems provided in 'wires' argument"):
p = U2
#dev = DefaultGaussian(wires=4, shots=1000, hbar=hbar)
gaussian_dev.apply('Interferometer', wires=[0, 1, 2], par=[p])
def test_apply_errors(self):
"""Test that apply fails for incorrect state preparation"""
self.logTestName()
with self.assertRaisesRegex(
ValueError, 'incorrect size for the number of subsystems'):
p = [thermal_state(0.5)]
self.dev.apply('GaussianState', wires=[0], par=[p])
with self.assertRaisesRegex(ValueError,
'Incorrect number of subsystems'):
p = U
self.dev.apply('Interferometer', wires=[0], par=[p])
with self.assertRaisesRegex(
ValueError,
"Invalid target subsystems provided in 'wires' argument"):
p = U2
dev = DefaultGaussian(wires=4, shots=0, hbar=hbar)
self.dev.apply('Interferometer', wires=[0, 1, 2], par=[p])
def test_apply_errors(self):
"""Test that apply fails for incorrect state preparation"""
self.logTestName()
with self.assertRaisesRegex(
ValueError, 'incorrect size for the number of subsystems'):
p = [thermal_state(0.5)]
self.dev.apply('GaussianState', wires=[0], par=[p])
with self.assertRaisesRegex(ValueError,
'incorrect number of subsystems'):
p = U
self.dev.apply('Interferometer', wires=[0], par=[p])
with self.assertRaisesRegex(
ValueError,
'Only 2-mode interferometers are currently supported.'):
p = U2
dev = DefaultGaussian(wires=4, shots=0, hbar=hbar)
self.dev.apply('Interferometer', wires=[0, 1, 2, 3], par=[p])
def thermal_state(self, tol):
"""Test the thermal state is correct."""
nbar = 0.5342
means, cov = thermal_state(nbar, hbar=hbar)
assert means == pytest.approx(np.zeros([2]), abs=tol)
assert np.all((cov.diag*2/hbar-1)/2 == nbar)
