Entanglement-enhanced information transmission over a quantum channel with correlated noise
Chiara Macchiavello, G. Massimo Palma · Physical Review A · 2002
We show that entanglement is a useful resource to enhance the mutual information of the depolarizing channel when the noise on consecutive uses of the channel has some partial correlations. We obtain a threshold in the degree of memory above which a higher amount of classical information is transmitted with entangled signals.