def test_mix_direct_and_deferred(self):
sdm = SparseDM(1)
sdm.rotate_y(0, np.pi)
sdm.apply_ptm(0, ptm.amp_ph_damping_ptm(1, 0))
sdm.rotate_y(0, np.pi)
sdm.project_measurement(0, 0)
assert not np.allclose(sdm.trace(), 1)
def test_majority_vote_on_excited_quantum(self):
bits = [1, 2, 3]
sdm = SparseDM(bits)
sdm.rotate_y(1, np.pi)
sdm.rotate_y(2, np.pi)
sdm.rotate_y(3, 2 * np.pi)
p = sdm.majority_vote(bits)
assert np.allclose(p, 1)
assert sdm._last_majority_vote_mask == 7
def test_rotate_xyz():
sdm = SparseDM(1)
sdm.rotate_x(0, np.pi / 2)
sdm.rotate_z(0, np.pi / 2)
sdm.rotate_y(0, -np.pi / 2)
assert np.allclose(sdm.trace(), 1)
sdm.project_measurement(0, 0)
assert np.allclose(sdm.trace(), 1)
def test_rotate_y():
sdm = SparseDM(2)
sdm.rotate_y(0, np.pi)
sdm.rotate_y(1, np.pi)
assert np.allclose(sdm.trace(), 1)
sdm.project_measurement(1, 1)
sdm.project_measurement(0, 1)
assert np.allclose(sdm.trace(), 1)
sdm.rotate_y(0, np.pi / 2)
sdm.rotate_y(1, np.pi / 2)
sdm.project_measurement(1, 1)
sdm.project_measurement(0, 1)
assert np.allclose(sdm.trace(), 0.25)
