def _apply_unitary_(self, args: 'protocols.ApplyUnitaryArgs'):
if not self._has_unitary_():
return None
if self.coefficient != 1:
args.target_tensor *= self.coefficient
return protocols.apply_unitaries([self[q].on(q) for q in self.qubits],
self.qubits, args)
def _apply_unitary_(self, args):
if not self._has_unitary_():
return NotImplemented
from cirq import devices
qubits = devices.LineQubit.range(len(self))
return protocols.apply_unitaries(self._decompose_(qubits), qubits,
args)
def _apply_unitary_(self, args: 'protocols.ApplyUnitaryArgs'
) -> Union[np.ndarray, None, NotImplementedType]:
"""Replicates the logic the simulators use to apply the equivalent
sequence of GateOperations
"""
if not protocols.has_unitary(self.gate):
return NotImplemented
return protocols.apply_unitaries((self.gate.on(q) for q in self.qubits),
self.qubits, args)
