dorsal/arxiv
View SchemaTeleportation as a Depolarizing Quantum Channel, Relative Entropy and Classical Capacity
| Authors | G. Bowen, S. Bose |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0107132 |
| URL | https://arxiv.org/abs/quant-ph/0107132 |
| DOI | 10.1103/PhysRevLett.87.267901 |
| Journal | Phys. Rev. Lett 87, 267901 (2001) |
Abstract
We show that standard teleportation with an arbitrary mixed state resource is equivalent to a generalized depolarizing channel with probabilities given by the maximally entangled components of the resource. This enables the usage of any quantum channel as a generalized depolarizing channel without additional twirling operations. It also provides a nontrivial upper bound on the entanglement of a class of mixed states. Our result allows a consistent and statistically motivated quantification of teleportation success in terms of the relative entropy and this quantification can be related to a classical capacity.
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"abstract": "We show that standard teleportation with an arbitrary mixed state resource is\nequivalent to a generalized depolarizing channel with probabilities given by\nthe maximally entangled components of the resource. This enables the usage of\nany quantum channel as a generalized depolarizing channel without additional\ntwirling operations. It also provides a nontrivial upper bound on the\nentanglement of a class of mixed states. Our result allows a consistent and\nstatistically motivated quantification of teleportation success in terms of the\nrelative entropy and this quantification can be related to a classical\ncapacity.",
"arxiv_id": "quant-ph/0107132",
"authors": [
"G. Bowen",
"S. Bose"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.87.267901",
"journal_ref": "Phys. Rev. Lett 87, 267901 (2001)",
"title": "Teleportation as a Depolarizing Quantum Channel, Relative Entropy and Classical Capacity",
"url": "https://arxiv.org/abs/quant-ph/0107132"
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