dorsal/arxiv
View SchemaCoherent Communication of Classical Messages
| Authors | Aram W. Harrow |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0307091 |
| URL | https://arxiv.org/abs/quant-ph/0307091 |
| DOI | 10.1103/PhysRevLett.92.097902 |
| Journal | Phys. Rev. Lett. 92, 097902 (2004) |
Abstract
We define "coherent communication" in terms of a simple primitive, show it is equivalent to the ability to send a classical message with a unitary or isometric operation, and use it to relate other resources in quantum information theory. Using coherent communication, we are able to generalize super-dense coding to prepare arbitrary quantum states instead of only classical messages. We also derive single-letter formulae for the classical and quantum capacities of a bipartite unitary gate assisted by an arbitrary fixed amount of entanglement per use.
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"abstract": "We define \"coherent communication\" in terms of a simple primitive, show it is\nequivalent to the ability to send a classical message with a unitary or\nisometric operation, and use it to relate other resources in quantum\ninformation theory. Using coherent communication, we are able to generalize\nsuper-dense coding to prepare arbitrary quantum states instead of only\nclassical messages. We also derive single-letter formulae for the classical and\nquantum capacities of a bipartite unitary gate assisted by an arbitrary fixed\namount of entanglement per use.",
"arxiv_id": "quant-ph/0307091",
"authors": [
"Aram W. Harrow"
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"doi": "10.1103/PhysRevLett.92.097902",
"journal_ref": "Phys. Rev. Lett. 92, 097902 (2004)",
"title": "Coherent Communication of Classical Messages",
"url": "https://arxiv.org/abs/quant-ph/0307091"
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