def test_circuit_structure():
syc = FakeSycamoreGate()
ops = cirq.decompose_cphase_into_two_fsim(cirq.CZ, fsim_gate=syc)
num_interaction_moments = 0
for op in ops:
assert len(op.qubits) in (0, 1, 2)
if len(op.qubits) == 2:
num_interaction_moments += 1
assert isinstance(op.gate, FakeSycamoreGate)
assert num_interaction_moments == 2
def test_parameterized_gates():
t = sympy.Symbol('t')
with pytest.raises(ValueError):
cphase_gate = cirq.CZPowGate(exponent=t)
fsim_gate = FakeSycamoreGate()
cirq.decompose_cphase_into_two_fsim(cphase_gate, fsim_gate=fsim_gate)
with pytest.raises(ValueError):
cphase_gate = cirq.CZ
fsim_gate = cirq.FSimGate(theta=t, phi=np.pi / 2)
cirq.decompose_cphase_into_two_fsim(cphase_gate, fsim_gate=fsim_gate)
with pytest.raises(ValueError):
cphase_gate = cirq.CZ
fsim_gate = cirq.FSimGate(theta=np.pi / 2, phi=t)
cirq.decompose_cphase_into_two_fsim(cphase_gate, fsim_gate=fsim_gate)
def assert_decomposition_valid(cphase_gate, fsim_gate):
u_expected = cirq.unitary(cphase_gate)
ops = cirq.decompose_cphase_into_two_fsim(cphase_gate, fsim_gate=fsim_gate)
u_actual = cirq.unitary(cirq.Circuit(ops))
assert np.allclose(u_actual, u_expected)
def test_invalid_qubits():
with pytest.raises(ValueError):
cirq.decompose_cphase_into_two_fsim(cphase_gate=cirq.CZ,
fsim_gate=FakeSycamoreGate(),
qubits=cirq.LineQubit.range(3))
def test_invalid_fsim_gate(bad_fsim_gate):
with pytest.raises(ValueError):
cirq.decompose_cphase_into_two_fsim(cirq.CZ, fsim_gate=bad_fsim_gate)
def test_invalid_qubits():
with pytest.raises(ValueError):
cirq.decompose_cphase_into_two_fsim(cphase_gate=cirq.CZ,
fsim_gate=cirq.google.SYC,
qubits=cirq.LineQubit.range(3))
