def zero_state(cls, circuit):
state = cls(circuit)
state.create_pieces()
with K.device(state.device):
piece = K.initial_state(nqubits=state.nlocal)
state.pieces[0] = K.optimization.Variable(piece, dtype=piece.dtype)
return state
def zero_state(cls, circuit):
"""Creates ``|00...0>`` as a distributed state."""
state = cls(circuit)
state.create_pieces()
with K.on_cpu():
piece = K.initial_state(nqubits=state.nlocal)
state.pieces[0] = K.cpu_tensor(piece, dtype=state.dtype)
return state
def zero_state(cls, nqubits):
state = cls(nqubits)
is_matrix = isinstance(state, MatrixState)
state.tensor = K.initial_state(nqubits, is_matrix)
return state
