Remarks on the classical capacity of quantum channel

Details Remarks on the classical capacity of quantum channel Remarks on the classical capacity of quantum channel

2002-12-04

arxiv.org/abs/quant-ph/0212025v1

Physics

Quantum Physics

6 pages

Scientific paper

A direct proof of the relation between the one-shot classical capacity and
the minimal output entropy for covariant quantum channels is suggested. The
structure of covariant channels is described in some detail. A simple proof of
a general inequality for entanglement-assisted classical capacity is given.

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