1[ 2 cirq.MixedUnitaryChannel(mixture=[ 3 (0.5, np.array([[1, 0], [0, 1]], dtype=np.int64)), 4 (0.5, np.array([[0, 1], [1, 0]], dtype=np.int64)) 5 ], key='flip'), 6 cirq.MixedUnitaryChannel(mixture=[ 7 (0.25, np.array([[1, 0], [0, 1]], dtype=np.complex64)), 8 (0.25, np.array([[0, 1], [1, 0]], dtype=np.complex64)), 9 (0.25, np.array([[0, -1j], [1j, 0]], dtype=np.complex64)), 10 (0.25, np.array([[1, 0], [0, -1]], dtype=np.complex64)), 11 ]), 12]