220 citations · 394 across the 10 of their papers we have counts for
10 papers
Spin chain model for correlated quantum channels
Davide Rossini, Vittorio Giovannetti, Simone Montangero
We analyze the quality of the quantum information transmission along a correlated quantum channel by studying the average fidelity between input and output states and the average o…
Qubit channels with small correlations
Filippo Caruso, Vittorio Giovannetti, Chiara Macchiavello +1
We introduce a class of quantum channels with correlations acting on pairs of qubits, where the correlation takes the form of a shift operator onto a maximally entangled state. We…
A new approach to characterize qubit channels
Filippo Caruso, Vittorio Giovannetti
We analyze qubit channels by exploiting the possibility of representing two-level quantum systems in terms of characteristic functions. To do so, we use functions of non-commuting…
Quantum Shared Broadcasting
V. Giovannetti, A. S. Holevo
A generalization of quantum broadcasting protocol is presented. Here the goal is to copy an unknown input state into two subsystems which partially overlap. We show that the possib…
A Protocol For Cooling and Controlling Composite Systems by Local Interactions
Daniel Burgarth, Vittorio Giovannetti
We discuss an explicit protocol which allows one to externally cool and control a composite system by operating on a small subset of it. The scheme permits to transfer arbitrary an…
Mediated Homogenization
Daniel Burgarth, Vittorio Giovannetti
Homogenization protocols model the quantum mechanical evolution of a system to a fixed state independently from its initial configuration by repeatedly coupling it with a collectio…