Title :
The capacity of the quantum channel with general signal states
Author_Institution :
Steklov Math. Inst., Moscow, Russia
fDate :
1/1/1998 12:00:00 AM
Abstract :
It is shown that the capacity of a classical-quantum channel with arbitrary (possibly mixed) states equals the maximum of the entropy bound with respect to all a priori distributions. This completes the recent result of Hausladen, Jozsa, Schumacher, Westmoreland, and Wootters (1996), who proved the equality for the pure state channel
Keywords :
channel capacity; entropy; error statistics; probability; quantum theory; a priori distributions; entropy bound; error probability; general signal states; quantum channel capacity; quantum communication theory; Codes; Communication channels; Entropy; Error probability; Hilbert space; Optical sensors; Physics; Probability distribution; Quantum computing; Quantum mechanics;
Journal_Title :
Information Theory, IEEE Transactions on
