205 citations · 618 across the 31 of their papers we have counts for
Showing 2001 · quant-phShow all
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quant-ph2001★ 23 cited
Qubit Channels Can Require More Than Two Inputs to Achieve Capacity
Christopher King, Michael Nathanson, Mary Beth Ruskai
We give examples of qubit channels that require three input states in order to achieve the Holevo capacity.
quant-ph2001★ 52 cited
Maximization of capacity and p-norms for some product channels
C. King
It is conjectured that the Holevo capacity of a product channel Ω\otimes Φis achieved when product states are used as input. Amosov, Holevo and Werner have also conjectured that th…
quant-ph2001★ 205 cited
Additivity for a class of unital qubit channels
C. King
Additivity of the Holevo capacity is proved for product channels, under the condition that one of the channels is in a certain class of unital qubit channels, with the other comple…