Dense coding capacity in correlated noisy channels with weak measurement* *Project supported by the National Natural Science Foundation of China (Grant No. 12074027).

Abstract

Capacity of dense coding via correlated noisy channel is greater than that via uncorrelated noisy channel. It is shown that the weak measurement and reversal measurement need to further improve their quantum dense coding capacity in correlated amplitude damping channel, but this improvement is very small in correlated phase damping channel and correlated depolarizing channel.