| Equivalence between two-qubit entanglement and secure key distribution. | |
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MedLine Citation:
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PMID: 14611441 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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We study the problem of secret key distillation from bipartite states in the scenario where Alice and Bob can perform measurements only at the single-copy level and classically process the obtained outcomes. Even with these limitations, secret bits can be asymptotically distilled by the honest parties from any two-qubit entangled state, under any individual attack. Our results point out a complete equivalence between two-qubit entanglement and secure key distribution: a key can be established through a one-qubit channel if and only if it allows one to distribute entanglement. These results can be generalized to a higher dimension for all those states that are one-copy distillable. |
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Authors:
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Antonio Acín; Lluis Masanes; Nicolas Gisin |
Publication Detail:
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Type: Journal Article Date: 2003-10-13 |
Journal Detail:
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Title: Physical review letters Volume: 91 ISSN: 0031-9007 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2003 Oct |
Date Detail:
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Created Date: 2003-11-12 Completed Date: 2003-12-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 167901 Citation Subset: - |
Affiliation:
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GAP-Optique, University of Geneva, 20, Rue de l'Ecole de Médecine, CH-1211 Geneva 4, Switzerland. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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