Geodesic
Entanglement-assisted capacities of constrained quantum channels
Teoriâ veroâtnostej i ee primeneniâ, Tome 48 (2003) no. 2, pp. 359-374

Voir la notice de l'article provenant de la source Math-Net.Ru

In this paper we fill a gap in previous works by proving the conjectured formula for the classical entanglement-assisted capacity of a quantum channel with additive constraint (such as the Bosonic Gaussian channel). Our main tools are the coding theorem for classical-quantum constrained channels and a finite-dimensional approximation of the input density operators for entanglement-assisted capacity. We also give sufficient conditions under which suprema in the capacity formulas are achieved.
Keywords: quantum communication channel, classical capacity, entangled state. 
@article{TVP_2003_48_2_a7,
     author = {A. S. Holevo},
     title = {Entanglement-assisted capacities of constrained quantum channels},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {359--374},
     publisher = {mathdoc},
     volume = {48},
     number = {2},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_2003_48_2_a7/}
}
TY  - JOUR
AU  - A. S. Holevo
TI  - Entanglement-assisted capacities of constrained quantum channels
JO  - Teoriâ veroâtnostej i ee primeneniâ
PY  - 2003
SP  - 359
EP  - 374
VL  - 48
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TVP_2003_48_2_a7/
LA  - ru
ID  - TVP_2003_48_2_a7
ER  - 
%0 Journal Article
%A A. S. Holevo
%T Entanglement-assisted capacities of constrained quantum channels
%J Teoriâ veroâtnostej i ee primeneniâ
%D 2003
%P 359-374
%V 48
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TVP_2003_48_2_a7/
%G ru
%F TVP_2003_48_2_a7
A. S. Holevo. Entanglement-assisted capacities of constrained quantum channels. Teoriâ veroâtnostej i ee primeneniâ, Tome 48 (2003) no. 2, pp. 359-374. http://geodesic.mathdoc.fr/item/TVP_2003_48_2_a7/