def test_catstate_complex_error(self):
"""Test that passing a complex parameter to gates that previously accepted
complex parameters raises an error."""
with pytest.raises(ValueError, match="cannot be complex"):
prog = Program(1)
with prog.context as q:
ops.Catstate(0.2 + 1j) | q
eng = Engine("fock", backend_options={"cutoff_dim": 5})
res = eng.run(prog)
def test_cat_state(self, setup_eng, hbar, cutoff, bsize, pure, tol):
"""Test cat state function matches Fock backends"""
eng, prog = setup_eng(1)
a = 0.32 + 0.1j
p = 0.43
with prog.context as q:
ops.Catstate(a, p) | q[0]
state = eng.run(prog)
ket = utils.cat_state(a, p, fock_dim=cutoff)
if not pure:
expected = state.dm()
ket = np.tile(np.outer(ket, ket.conj()), (bsize, 1, 1))
else:
expected = state.ket()
ket = np.tile(ket, (bsize, 1))
assert np.allclose(expected, ket, atol=tol, rtol=0)