Josephson arrays as quantum channels

We show that one-dimensional Josephson junction arrays can behave as quantum channels and can be used to transfer quantum information between distant sites. In particular, we discuss simple protocols to realize, without external control, state transfer with high fidelity in Josephson chains. The channels do not require complicate gating but use the natural dynamics of a properly designed array. We analyze the influence of disorder both in the Josephson energies and in the background gate charges, and we propose an experiment, realizable with present-day technology, that may allow to implement these protocols.