Security of two-way quantum cryptography against asymmetric attacks - art. no. 709215

Stefano Pirandola, Stefano Mancini, Seth Lloyd, Samuel L. Braunstein

Research output: Contribution to conferencePaperpeer-review


Recently, 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 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.
Original languageUndefined/Unknown
Publication statusPublished - 2008
EventConference on Quantum Communications and Quantum Imaging VI - San Diego, California, United States
Duration: 12 Aug 200814 Aug 2008


ConferenceConference on Quantum Communications and Quantum Imaging VI
Country/TerritoryUnited States
CitySan Diego, California

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