  We show a perfect state transfer of an arbitrary unknown two-qubit state can
be achieved via a discrete-time quantum walk with various settings of coin
flippings, and extend this method to distribution of an arbitrary unknown
multi-qubit entangled state between every pair of sites in the
multi-dimensional network. Furthermore, we study the routing of quantum
information on this network in a quantum walk architecture, which can be used
as quantum information processors to communicate between separated qubits.
