Entanglement between two uses of a noisy multipartite quantum channel enables perfect transmission of classical information

Publication Type:
Journal Article
Citation:
Physical Review Letters, 2008, 101 (2)
Issue Date:
2008-07-10
Metrics:
Full metadata record
Files in This Item:
Filename Description Size
Thumbnail2008004780OK.pdf146.34 kB
Adobe PDF
Suppose that m senders want to transmit classical information to n receivers with zero probability of error using a noisy multipartite communication channel. The senders are allowed to exchange classical, but not quantum, messages among themselves, and the same holds for the receivers. If the channel is classical, a single use can transmit information if and only if multiple uses can. In sharp contrast, we exhibit, for each m and n with m>1 or n>1, a quantum channel of which a single use is not able to transmit information yet two uses can. This latter property requires and is enabled by quantum entanglement. © 2008 The American Physical Society.
Please use this identifier to cite or link to this item: