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General immunity and superadditivity of two-way Gaussian quantum cryptography

We consider two-way continuous-variable quantum key distribution, studying its security against general eavesdropping strategies. Assuming the asymptotic limit of many signals exchanged, we prove that two-way Gaussian protocols are immune to coherent attacks. More precisely we show the general super...

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Publicat a:Sci Rep
Autors principals: Ottaviani, Carlo, Pirandola, Stefano
Format: Artigo
Idioma:Inglês
Publicat: Nature Publishing Group 2016
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Accés en línia:https://ncbi.nlm.nih.gov/pmc/articles/PMC4772010/
https://ncbi.nlm.nih.gov/pubmed/26928053
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1038/srep22225
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