We demonstrate that the quantum communication between two parties can be
significantly improved if the receiver is allowed to store the received signals
in a quantum memory before decoding them. In the limit of an infinite memory,
the transfer is perfect. We prove that this scheme allows the transfer of
arbitrary multipartite states along Heisenberg chains of spin-1/2 particles
with random coupling strengths.Comment: 4 pages, 1 figure; added references to homogenization and asymptotic
completenes