Details
| Original language | English |
|---|---|
| Pages (from-to) | 26 |
| Number of pages | 1 |
| Journal | New J. Phys. |
| Volume | 6 |
| Publication status | Published - 2004 |
Abstract
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In: New J. Phys., Vol. 6, 2004, p. 26.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tema con variazioni: quantum channel capacity
AU - Kretschmann, D
AU - Werner, R. F.
PY - 2004
Y1 - 2004
N2 - Channel capacity describes the size of the nearly ideal channels, which can be obtained from many uses of a given channel, using an optimal error correcting code. In this paper we collect and compare minor and major variations in the mathematically precise statements of this idea which have been put forward in the literature. We show that all the variations considered lead to equivalent capacity definitions. In particular, it makes no difference whether one requires mean or maximal errors to go to zero, and it makes no difference whether errors are required to vanish for any sequence of block sizes compatible with the rate, or only for one infinite sequence.
AB - Channel capacity describes the size of the nearly ideal channels, which can be obtained from many uses of a given channel, using an optimal error correcting code. In this paper we collect and compare minor and major variations in the mathematically precise statements of this idea which have been put forward in the literature. We show that all the variations considered lead to equivalent capacity definitions. In particular, it makes no difference whether one requires mean or maximal errors to go to zero, and it makes no difference whether errors are required to vanish for any sequence of block sizes compatible with the rate, or only for one infinite sequence.
U2 - 10.1088/1367-2630/6/1/026
DO - 10.1088/1367-2630/6/1/026
M3 - Article
VL - 6
SP - 26
JO - New J. Phys.
JF - New J. Phys.
SN - 1367-2630
ER -