On Reliability Function of Quantum Communication Channel

Details On Reliability Function of Quantum Communication Channel On Reliability Function of Quantum Communication Channel

1997-03-08

arxiv.org/abs/quant-ph/9703013v4

Physics

Quantum Physics

12 pages, Latex209, correct proof of Proposition 1 is given, 2 figures added

Scientific paper

The reliability function gives the rate of exponential convergence to zero of the error probability in a communication channel. In this paper bounds for the reliability function of a quantum pure state channel are given, reminiscent of the corresponding classical bounds. This in particular suggests an alternative proof of the coding theorem for quantum noiseless channel, which would make no use of the notion of typical subspace. Example of binary quantum channel is considered in some detail.

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