Classical information and distillable entanglement
We establish a quantitative connection between the amount of lost classical information about a quantum state and the concomitant loss of entanglement. Using methods that have been developed for the optimal purification of mixed states, we find a class of mixed states with known distillable entanglement. These results can be used to determine the quantum capacity of a quantum channel which randomizes the order of transmitted signals.
Eisert
J
Institut fur Physik, Universitat Potsdam, 14469 Potsdam, Germany.
Felbinger
T
Papadopoulos
P
Plenio
MB
Wilkens
M