2026-04-13T15:22:14Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4011902024-11-30T23:09:51Zcom_2072_98col_2072_378192

Quantum key distillation from Gaussian states by Gaussian operations Navascués, M. Bae, J. Cirac Sasturáin, Juan Ignacio, Lewestein, Maciej Sanpera Trigueros, Anna Acín, Antonio American Physical Society We study the secrecy properties of Gaussian states under Gaussian operations. Although such operations are useless for quantum distillation, we prove that it is possible to distill a secret key secure against any attack from sufficiently entangled Gaussian states with nonpositive partial transposition. Moreover, all such states allow for key distillation, when Eve is assumed to perform finite-size coherent attacks before the reconciliation process. 2005 Article https://ddd.uab.cat/record/114367 urn:10.1103/PhysRevLett.94.010502 urn:oai:ddd.uab.cat:114367 urn:recercauab:ARE-31359 urn:articleid:10797114v94n1p10502 urn:scopus_id:18144394385 urn:wos_id:000226308000006 urn:oai:egreta.uab.cat:publications/a1649a74-626f-42a0-a4a6-8e8610b53c26 eng Physical review letters ; Vol. 94, Issue 1 (January 2005), p. 010502 open access Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets. https://rightsstatements.org/vocab/InC/1.0/ application/pdf