def test_bloch_derivative_all(self):
ham = la.CartesianSpinOperator((0, 0, 0, 1))
rho = la.CartesianSpinOperator((0.5, 0, 0.5, 0))
bd_c = bloch_derivative(rho, ham, gdiss=0., gdeph=1.)
ud = unitary_derivative(rho, ham)
nud = -1 * la.CartesianSpinOperator((0, 0, 0.5, 0))
bd_e = ud + nud
self.assertEqual(bd_c, bd_e)
def test_bloch_derivative_no_unitary_part(self):
ham = la.CartesianSpinOperator((0, 0, 0, 0))
rho = la.CartesianSpinOperator((0.5, 0, 0.5, 0))
bd_c = bloch_derivative(rho, ham, gdiss=0., gdeph=1.)
bd_e = -1 * la.CartesianSpinOperator((0, 0, 0.5, 0))
self.assertEqual(bd_c, bd_e)
def test_bloch_derivative_unitary_consistency(self):
ham = la.CartesianSpinOperator((0, 0, 0, 1))
rho = la.CartesianSpinOperator((0.5, 0, 0.5, 0))
ud = unitary_derivative(rho, ham)
bd = bloch_derivative(rho, ham, gdiss=0, gdeph=0)
self.assertEqual(ud, bd)