def test_is_unitary_no_channel(self, prog):
"""test that the is_unitary function returns True if no channels are present"""
assert utils.is_unitary(prog)
with prog.context as q:
Sgate(0.4) | q[0]
BSgate(0.4) | q
assert utils.is_unitary(prog)
def test_is_unitary_no_channel(self):
"""test that the is_unitary function returns True if no channels are present"""
eng, q = sf.Engine(2)
assert utils.is_unitary(eng)
with eng:
Sgate(0.4) | q[0]
BSgate(0.4) | q
assert utils.is_unitary(eng)
def test_is_unitary_with_channel(self, prog):
"""test that the is_unitary function returns False if channels are present"""
with prog.context as q:
Sgate(0.4) | q[0]
LossChannel(0.4) | q[0]
BSgate(0.4) | q
assert not utils.is_unitary(prog)
def test_is_unitary_with_channel(self):
"""test that the is_unitary function returns False if channels are present"""
eng, q = sf.Engine(2)
with eng:
Sgate(0.4) | q[0]
LossChannel(0.4) | q[0]
BSgate(0.4) | q
assert not utils.is_unitary(eng)
