Unconditional Optimality of Gaussian Attacks Against Continuous-variable Quantum Key Distribution

Overview

Journal Phys Rev Lett

Publisher American Physical Society

Specialty Biophysics

Date 2006 Dec 13

PMID 17155606

Citations 21

Authors

Raul Garcia-Patron

Nicolas J Cerf

Affiliations

Soon will be listed here.

Abstract

A fully general approach to the security analysis of continuous-variable quantum key distribution (CV-QKD) is presented. Provided that the quantum channel is estimated via the covariance matrix of the quadratures, Gaussian attacks are shown to be optimal against all collective eavesdropping strategies. The proof is made strikingly simple by combining a physical model of measurement, an entanglement-based description of CV-QKD, and a recent powerful result on the extremality of Gaussian states [M. M. Wolf, Phys. Rev. Lett. 96, 080502 (2006)10.1103/PhysRevLett.96.080502].

Citing Articles

Reconfigurable entanglement distribution network based on pump management of a spontaneous four-wave mixing source.

Liu J, Liu D, Jin Z, Lin Z, Li H, You L Sci Adv. 2024; 10(50):eado9822.

PMID: 39671494 PMC: 11640999. DOI: 10.1126/sciadv.ado9822.

Demonstration of microwave single-shot quantum key distribution.

Fesquet F, Kronowetter F, Renger M, Yam W, Gandorfer S, Inomata K Nat Commun. 2024; 15(1):7544.

PMID: 39214975 PMC: 11364819. DOI: 10.1038/s41467-024-51421-7.

Entanglement-Based CV-QKD with Information Reconciliation over Entanglement-Assisted Link.

Djordjevic I, Nafria V Entropy (Basel). 2024; 26(4).

PMID: 38667859 PMC: 11048849. DOI: 10.3390/e26040305.

Effective Excess Noise Suppression in Continuous-Variable Quantum Key Distribution through Carrier Frequency Switching.

Dong J, Wang T, He Z, Shi Y, Li L, Huang P Entropy (Basel). 2023; 25(9).

PMID: 37761585 PMC: 10527916. DOI: 10.3390/e25091286.

Polarization Attack on Continuous-Variable Quantum Key Distribution with a Local Local Oscillator.

Shao Y, Pan Y, Wang H, Pi Y, Li Y, Ma L Entropy (Basel). 2022; 24(7).

PMID: 35885215 PMC: 9320017. DOI: 10.3390/e24070992.