The Holevo-Schumacher-Westmoreland Channel Capacity for a Class of Qudit Unital Channels

Details The Holevo-Schumacher-Westmoreland Channel Capacity for a Class of Qudit Unital Channels The Holevo-Schumacher-Westmoreland Channel Capacity for a Class of Qudit Unital Channels

2002-11-15

arxiv.org/abs/quant-ph/0211093v1

Physics

Quantum Physics

21 Pages. No Figures

Scientific paper

The Holevo-Schumacher-Westmoreland (HSW) classical (entanglement-unassisted) channel capacity for a class of qudit unital channels is shown to be C = log2(d) - Smin, where d is the dimension of the qudit, and Smin is the minimum possible von Neumann entropy at the channel output. The HSW channel capacity for tensor products of this class of unital qudit channels is shown to obey the same formula.

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