dorsal/arxiv
View SchemaUniversal and phase covariant superbroadcasting for mixed qubit states
| Authors | Francesco Buscemi, Giacomo Mauro D'Ariano, Chiara Macchiavello, Paolo Perinotti |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0602125 |
| URL | https://arxiv.org/abs/quant-ph/0602125 |
| DOI | 10.1103/PhysRevA.74.042309 |
| Journal | Phys. Rev. A 74, 042309 (2006) |
Abstract
We describe a general framework to study covariant symmetric broadcasting maps for mixed qubit states. We explicitly derive the optimal N to M superbroadcasting maps, achieving optimal purification of the single-site output copy, in both the universal and the phase covariant cases. We also study the bipartite entanglement properties of the superbroadcast states.
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"abstract": "We describe a general framework to study covariant symmetric broadcasting\nmaps for mixed qubit states. We explicitly derive the optimal N to M\nsuperbroadcasting maps, achieving optimal purification of the single-site\noutput copy, in both the universal and the phase covariant cases. We also study\nthe bipartite entanglement properties of the superbroadcast states.",
"arxiv_id": "quant-ph/0602125",
"authors": [
"Francesco Buscemi",
"Giacomo Mauro D\u0027Ariano",
"Chiara Macchiavello",
"Paolo Perinotti"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.74.042309",
"journal_ref": "Phys. Rev. A 74, 042309 (2006)",
"title": "Universal and phase covariant superbroadcasting for mixed qubit states",
"url": "https://arxiv.org/abs/quant-ph/0602125"
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