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About this paper
Matthew Can, Mark M. Wilde
The authors give a recovery guarantee for extracting an m-dimensional entangled pair from a noisy state or channel. They use Petz recovery and apply Cheng’s inequality to a fixed code before averaging, reducing this to binary testing. For a qubit erasure channel at n=8, the full certificate gives m=4 and optimized slack gives m=3; these are achievable bounds, not converses.
Summary by alphaXiv.
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