mppovm.py 文件源码

def probability_map(self):
        """Map that takes a raveled MPDO to the POVM probabilities

        You can use :func:`MPPovm.expectations()` or
        :func:`MPPovm.pmf()` as convenient wrappers around this map.

        If `rho` is a matrix product density operator (MPDO), then

        .. code::python

            mp.dot(a_povm.probability_map, rho.ravel())

        produces the POVM probabilities as MPA (similar to
        :func:`mpnum.povm.localpovm.POVM.probability_map`).

        """
        # See :func:`.localpovm.POVM.probability_map` for explanation
        # of the transpose.
        return self.transpose((0, 2, 1)).reshape(
            (pdim[0], -1) for pdim in self.shape)