Geodesic
On Channels with Finite Holevo Capacity
Teoriâ veroâtnostej i ee primeneniâ, Tome 53 (2008) no. 4, pp. 732-750

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We consider the nontrivial class of infinite dimensional quantum channels, characterized by the finiteness of the Holevo capacity. The sufficient conditions of existence of an optimal measure are obtained and examples of channels with no optimal measure are constructed.
Keywords: quantum state, quantum channel, quantum entropy, Holevo capacity. 
@article{TVP_2008_53_4_a4,
     author = {M. E. Shirokov},
     title = {On {Channels} with {Finite} {Holevo} {Capacity}},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {732--750},
     publisher = {mathdoc},
     volume = {53},
     number = {4},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_2008_53_4_a4/}
}
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M. E. Shirokov. On Channels with Finite Holevo Capacity. Teoriâ veroâtnostej i ee primeneniâ, Tome 53 (2008) no. 4, pp. 732-750. http://geodesic.mathdoc.fr/item/TVP_2008_53_4_a4/