Time correlated quantum amplitude damping channel

Details Time correlated quantum amplitude damping channel Time correlated quantum amplitude damping channel

2002-12-05

arxiv.org/abs/quant-ph/0212032v1

Physics

Quantum Physics

9 pages, REVTex4

Scientific paper

10.1103/PhysRevA.67.064301

We analyze the problem of sending classical information through qubit channels where successive uses of the channel are correlated. This work extends the analysis of C. Macchiavello and G. M. Palma to the case of a non-Pauli channel - the amplitude damping channel. Using the channel description outlined in S. Daffer, et al, we derive the correlated amplitude damping channel. We obtain a similar result to C. Macchiavello and G. M. Palma, that is, that under certain conditions on the degree of channel memory, the use of entangled input signals may enhance the information transmission compared to the use of product input signals.

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