Upper bounds on the accuracy of an assisted classical channel

Details Upper bounds on the accuracy of an assisted classical channel Upper bounds on the accuracy of an assisted classical channel

2012-01-06

arxiv.org/abs/1201.1521v1

Physics

Quantum Physics

4 pages

Scientific paper

If Alice attempts to communicate a single bit to Bob over a noisy classical channel, the one-shot success probability is the probability that Bob correctly receives this bit. It has recently been shown that the one-shot success probability can be increased if Alice and Bob share non-signaling correlations or entanglement. We investigate the limitations of this assistance. We provide tight upper bounds on the amount that a non-signaling correlation can increase the one-shot success probability. In the case of binary correlations, we extend these to tight upper bounds on the entanglement-assisted one-shot success probability.

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