Security of two-way quantum cryptography against asymmetric Gaussian attacks

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dc.creatorPirandola, Stefano
dc.creatorMancini, Stefano
dc.creatorLloyd, Seth
dc.creatorBraunstein, Samuel L.
dc.date2008-07-11
dc.date2008-09-18
dc.date.accessioned2026-07-07T10:03:25Z
dc.date.available2026-07-07T10:03:25Z
dc.descriptionRecently, we have shown the advantages of two-way quantum communications in continuous variable quantum cryptography. Thanks to this new approach, two honest users can achieve a non-trivial security enhancement as long as the Gaussian interactions of an eavesdropper are independent and identical. In this work, we consider asymmetric strategies where the Gaussian interactions can be different and classically correlated. For several attacks of this kind, we prove that the enhancement of security still holds when the two-way protocols are used in direct reconciliation.
dc.descriptionProceeding of the SPIE Conference "Quantum Communications and Quantum Imaging VI" - San Diego 2008. This paper is connected with arXiv:quant-ph/0611167 (for the last version see: Nature Physics 4, 726 (2008))
dc.identifierhttps://arxiv.org/abs/0807.1937
dc.identifierhttp://arxiv.org/abs/0807.1937
dc.identifierProc. SPIE, Vol. 7092, 709215 (2008)
dc.identifierdoi:10.1117/12.793805
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169279
dc.subjectQuantum Physics
dc.titleSecurity of two-way quantum cryptography against asymmetric Gaussian attacks
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