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Physical Review A

Holevo capacity of attenuation channels assisted by linear amplifiers

Masaki Sohma, Osamu Hirota

Published Aug 9, 2007• 3 citations
Publisher

Abstract

We derive a capacity formula for attenuation channels assisted by quantum linear amplifiers when the input signal states are restricted to Gaussian states with the same correlation matrix. A phase insensitive linear amplifier and a phase sensitive linear amplifier are compared by using this formula.
DOI
10.1103/physreva.76.024303

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