def test_multiply(self) -> None:
dimension = 2
identity = Unitary.identity(dimension)
product = Unitary(dimension)
product = product.left_multiply(UnitaryDefinitions.sigmax())
assert product.close_to(UnitaryDefinitions.sigmax())
product = product.right_multiply(UnitaryDefinitions.sigmay())
assert product.close_to(UnitaryDefinitions.sigmaz())
product = product.left_multiply(UnitaryDefinitions.sigmaz())
assert product.close_to(identity)
def test_inverse_fixed(self) -> None:
dimension = 2
operation_name = 'U'
unitary = Unitary(dimension,
np.array([[np.exp(1j * np.pi / 4), 0], [0, 1j]]),
operation_name)
inverse = unitary.inverse()
assert unitary.left_multiply(inverse).close_to(np.identity(dimension))
assert unitary.right_multiply(inverse).close_to(np.identity(dimension))
assert inverse.get_display_name() == 'U†'
double_inverse = inverse.inverse()
assert double_inverse.get_display_name() == 'U'
assert unitary.close_to(double_inverse)
def test_default(self) -> None:
dimension = 4
unitary = Unitary(dimension)
assert unitary.get_dimension() == dimension
assert unitary.close_to(np.identity(dimension))