Classical capacity of the lossy bosonic channel: the exact solution.
The classical capacity of the lossy bosonic channel is calculated exactly. It is shown that its Holevo information is not superadditive, and that a coherent-state encoding achieves capacity. The capacity of far-field, free-space optical communications is given as an example.
Giovannetti
V
V
Massachusetts Institute of Technology-Research Laboratory of Electronics, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA.
Guha
S
S
Lloyd
S
S
Maccone
L
L
Shapiro
J H
JH
Yuen
H P
HP