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- W2562160718 abstract "The one-shot success probability of a noisy classical channel for transmitting one classical bit is the optimal probability with which the bit can be sent via a single use of the channel. Prevedel et al. (PRL 106, 110505 (2011)) recently showed that for a specific channel, this quantity can be increased if the parties using the channel share an entangled quantum state. We completely characterize the optimal entanglement-assisted protocols in terms of the radius of a set of operators associated with the channel. This characterization can be used to construct optimal entanglement-assisted protocols from the given classical channel and to prove the limit of such protocols. As an example, we show that the Prevedel et al. protocol is optimal for two-qubit entanglement. We also prove some simple upper bounds on the improvement that can be obtained from quantum and no-signaling correlations." @default.
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- W2562160718 date "2012-01-06" @default.
- W2562160718 modified "2023-10-18" @default.
- W2562160718 title "Upper bounds on the accuracy of an assisted classical channel" @default.
- W2562160718 hasPublicationYear "2012" @default.
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