title: Teleportation-induced correlated quantum channels.
abstract: Quantum teleportation of an n-qubit state performed using as an entangled resource a general bipartite state of 2n qubits instead of n Bell states is equivalent to a correlated Pauli channel. This yields a new characterization of such channels in terms of many-body correlation functions of the teleporting media. It provides a relatively simple method for determining whether a correlated quantum channel is able to reliably convey quantum messages by studying the entanglement properties of the teleportation mediating system. Our model is then generalized to the continuous-variable case.
authors.affiliation: Institut für Theoretische Physik, Universität Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Caruso
authors.forename: V
authors.initials: V
authors.lastname: Giovannetti
authors.forename: G M
authors.initials: GM
authors.lastname: Palma