def test_double_cnot_bit_flip(simulator, p):
qubit = 1
U = gates.X(0) + gates.X(2) + gates.CX(0, 1) + gates.CX(2, 1)
H = paulis.Qm(qubit)
O = ExpectationValue(U=U, H=H)
NM = BitFlip(p, 2)
E = simulate(O, backend=simulator, samples=1, noise=NM)
def test_double_cnot_bit_flip(simulator, p):
qubit = 1
U = gates.X(0) + gates.X(2) + gates.CX(0, 1) + gates.CX(2, 1)
H = paulis.Qm(qubit)
O = ExpectationValue(U=U, H=H)
NM = BitFlip(p, 2)
E = simulate(O, backend=simulator, samples=1000, noise=NM)
assert (numpy.isclose(E, 2 * (p - p * p), atol=1.e-1))
def test_bit_flip(simulator, p, controlled):
qubit = 0
if controlled:
U = gates.X(target=1) + gates.CX(1, 0)
H = paulis.Qm(0)
NM = BitFlip(p, 2)
else:
U = gates.X(target=0)
NM = BitFlip(p, 1)
H = paulis.Qm(qubit)
O = ExpectationValue(U=U, H=H)
E = simulate(O, backend=simulator, samples=1, noise=NM)
def test_bit_flip(simulator, p, controlled):
qubit = 0
if controlled:
U = gates.X(target=1) + gates.CX(1, 0)
H = paulis.Qm(0)
NM = BitFlip(p, 2)
else:
U = gates.X(target=0)
NM = BitFlip(p, 1)
H = paulis.Qm(qubit)
O = ExpectationValue(U=U, H=H)
E = simulate(O, backend=simulator, samples=1000, noise=NM)
assert (numpy.isclose(E, 1.0 - p, atol=1.e-1))
