Approximate quantum error correction

Details Approximate quantum error correction Approximate quantum error correction

2001-12-18

arxiv.org/abs/quant-ph/0112106v1

Physics

Quantum Physics

9 pages, LaTeX

Scientific paper

The errors that arise in a quantum channel can be corrected perfectly if and
only if the channel does not decrease the coherent information of the input
state. We show that, if the loss of coherent information is small, then
approximate error correction is possible.

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