Sending classical information via noisy quantum channels
This paper extends previous results about the classical information capacity of a noiseless quantum-mechanical communication channel to situations in which the final signal states are mixed states, that is, to channels with noise.
Schumacher, Benjamin and Westmoreland, Michael, "Sending classical information via noisy quantum channels" (1997). Physical Review A 56(1): 131-138. Faculty Publications. Paper 287.
Physical Review A