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

TY - CONF

T1 - Security of two-way quantum cryptography against asymmetric attacks - art. no. 709215

AU - Pirandola, Stefano

AU - Mancini, Stefano

AU - Lloyd, Seth

AU - Braunstein, Samuel L.

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=55649103231&partnerID=8YFLogxK

U2 - 10.1117/12.793805

DO - 10.1117/12.793805

M3 - Paper

SP - 9215

T2 - Conference on Quantum Communications and Quantum Imaging VI

Y2 - 12 August 2008 through 14 August 2008

ER -