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- Paul Jouguet, Sébastien Kunz-Jacques, Anthony Leverrier
- ArXiv
- 2011

We designed high-efficiency error correcting codes allowing to extract an errorless secret key in a Continuous-Variable Quantum Key Distribution (CVQKD) protocol using a Gaussian modulation of coherent states and a homodyne detection. These codes are available for a wide range of signalto-noise ratios on an Additive White Gaussian Noise Channel (AWGNC) with… (More)

- Marc Kaplan, Gaëtan Leurent, Anthony Leverrier, María Naya-Plasencia
- CRYPTO
- 2016

Due to Shor’s algorithm, quantum computers are a severe threat for public key cryptography. This motivated the cryptographic community to search for quantum-safe solutions. On the other hand, the impact of quantum computing on secret key cryptography is much less understood. In this paper, we consider attacks where an adversary can query an oracle… (More)

- Todd Fritz, A B Sainz, +4 authors Antonio Acin
- Nature communications
- 2013

In recent years, the use of information principles to understand quantum correlations has been very successful. Unfortunately, all principles considered so far have a bipartite formulation, but intrinsically multipartite principles, yet to be discovered, are necessary for reproducing quantum correlations. Here we introduce local orthogonality, an… (More)

- David Elkouss, Anthony Leverrier, Romain Alléaume, Joseph Jean Boutros
- 2009 IEEE International Symposium on Information…
- 2009

Reconciliation is an essential part of any secret-key agreement protocol and hence of a Quantum Key Distribution (QKD) protocol, where two legitimate parties are given correlated data and want to agree on a common string in the presence of an adversary, while revealing a minimum amount of information. In this paper, we show that for discrete-variable QKD… (More)

- Rémi Blandino, Anthony Leverrier, +4 authors Charles Fabry
- 2012

Rémi Blandino,1,* Anthony Leverrier,2 Marco Barbieri,1,† Jean Etesse,1 Philippe Grangier,1 and Rosa Tualle-Brouri1,3 1Laboratoire Charles Fabry, Institut d’Optique, Centre National de la Recherche Scientifique, Université Paris-Sud, Campus Polytechnique, RD 128, 91127 Palaiseau Cedex, France 2Institute for Theoretical Physics, Eidgenössische Technische… (More)

- Fadri Furrer, T. Franz, +4 authors Reinhard F. Werner
- Physical review letters
- 2012

We provide a security analysis for continuous variable quantum key distribution protocols based on the transmission of two-mode squeezed vacuum states measured via homodyne detection. We employ a version of the entropic uncertainty relation for smooth entropies to give a lower bound on the number of secret bits which can be extracted from a finite number of… (More)

- Romain Alléaume, Jan Bouda, +20 authors Anton Zeilinger
- ArXiv
- 2007

Document history: During the first year of the SECOQC project [1], Philippe Grangier initiated an internal debate regarding the " comparative advantages " of quantum key distribution (QKD). A first written contribution to this debate, by Philippe Grangier, Louis Salvail, Nicolas Gisin and Thierry Debuisschert [2], was then made available to all SECOQC… (More)

- Anthony Leverrier, Romain Alléaume, Joseph Jean Boutros, Gilles Zémor, Philippe Grangier
- 2008 IEEE International Symposium on Information…
- 2008

We propose a method for extracting an errorless secret key in a continuous-variable quantum key distribution protocol, which is based on Gaussian modulation of coherent states and homodyne detection. The crucial feature is an eight-dimensional reconciliation method, relying on the algebraic properties of octonions. By using this coding scheme with an… (More)

- Marc Kaplan, Gaëtan Leurent, Anthony Leverrier, María Naya-Plasencia
- IACR Trans. Symmetric Cryptol.
- 2016

Quantum computers, that may become available one day, will impact many scientific fields. Cryptography is certainly one of them since many asymmetric primitives would become insecure against an adversary with quantum capabilities. Cryptographers are already anticipating this threat by proposing and studying a number of potentially quantum-safe alternatives… (More)

- Paul Jouguet, Sébastien Kunz-Jacques, +8 authors Philippe Painchault
- Optics express
- 2012

We report on the design and performance of a point-to-point classical symmetric encryption link with fast key renewal provided by a Continuous Variable Quantum Key Distribution (CVQKD) system. Our system was operational and able to encrypt point-to-point communications during more than six months, from the end of July 2010 until the beginning of February… (More)