def test_to_clifford_tableau_util_function():
tableau = cirq.ops.clifford_gate._to_clifford_tableau(
x_to=cirq.PauliTransform(to=cirq.X, flip=False),
z_to=cirq.PauliTransform(to=cirq.Z, flip=False),
)
assert tableau == cirq.CliffordTableau(num_qubits=1, initial_state=0)
tableau = cirq.ops.clifford_gate._to_clifford_tableau(
x_to=cirq.PauliTransform(to=cirq.X, flip=False),
z_to=cirq.PauliTransform(to=cirq.Z, flip=True),
)
assert tableau == cirq.CliffordTableau(num_qubits=1, initial_state=1)
tableau = cirq.ops.clifford_gate._to_clifford_tableau(
rotation_map={
cirq.X: cirq.PauliTransform(to=cirq.X, flip=False),
cirq.Z: cirq.PauliTransform(to=cirq.Z, flip=False),
}
)
assert tableau == cirq.CliffordTableau(num_qubits=1, initial_state=0)
tableau = cirq.ops.clifford_gate._to_clifford_tableau(
rotation_map={
cirq.X: cirq.PauliTransform(to=cirq.X, flip=False),
cirq.Z: cirq.PauliTransform(to=cirq.Z, flip=True),
}
)
assert tableau == cirq.CliffordTableau(num_qubits=1, initial_state=1)
with pytest.raises(ValueError):
cirq.ops.clifford_gate._to_clifford_tableau()
def test_init_90rot_from_single(trans, frm):
gate = cirq.SingleQubitCliffordGate.from_single_map({frm: trans})
assert gate.transform(frm) == trans
_assert_not_mirror(gate)
_assert_no_collision(gate)
# Check that it decomposes to one gate
assert len(gate.decompose_rotation()) == 1
# Check that this is a 90 degree rotation gate
assert (gate.merged_with(gate).merged_with(gate).merged_with(gate) ==
cirq.SingleQubitCliffordGate.I)
# Check that flipping the transform produces the inverse rotation
trans_rev = cirq.PauliTransform(trans.to, not trans.flip)
gate_rev = cirq.SingleQubitCliffordGate.from_single_map({frm: trans_rev})
assert gate**-1 == gate_rev
def _all_rotation_pairs():
for px, flip_x, pz, flip_z in itertools.product(cirq.Pauli.XYZ, _bools,
cirq.Pauli.XYZ, _bools):
if px == pz:
continue
yield cirq.PauliTransform(px, flip_x), cirq.PauliTransform(pz, flip_z)
def _all_rotations():
for pauli, flip, in itertools.product(cirq.Pauli.XYZ, _bools):
yield cirq.PauliTransform(pauli, flip)
def _all_rotations():
for (
pauli,
flip,
) in itertools.product(_paulis, _bools):
yield cirq.PauliTransform(pauli, flip)