Quantum Communication With Zero-Capacity Channels

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dc.creatorSmith, Graeme
dc.creatorYard, Jon
dc.date2008-07-30
dc.date2009-02-20
dc.date.accessioned2026-07-07T12:43:56Z
dc.date.available2026-07-07T12:43:56Z
dc.descriptionCommunication over a noisy quantum channel introduces errors in the transmission that must be corrected. A fundamental bound on quantum error correction is the quantum capacity, which quantifies the amount of quantum data that can be protected. We show theoretically that two quantum channels, each with a transmission capacity of zero, can have a nonzero capacity when used together. This unveils a rich structure in the theory of quantum communications, implying that the quantum capacity does not uniquely specify a channel's ability for transmitting quantum information.
dc.descriptionFinal submitted version
dc.identifierhttps://arxiv.org/abs/0807.4935
dc.identifierhttp://arxiv.org/abs/0807.4935
dc.identifierScience 321, 1812 - 1815 (2008)
dc.identifierdoi:10.1126/science.1162242
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220595
dc.subjectQuantum Physics
dc.titleQuantum Communication With Zero-Capacity Channels
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