Quantum cryptography using practical photonic systems - Foton CNRS [PDF]

Quantum cryptography using practical photonic systems. Eleni Diamanti. Laboratoire d'Informatique de Paris 6. UniversitÃ

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Séminaire

Quantum cryptography using practical photonic systems Eleni Diamanti Laboratoire d’Informatique de Paris 6 Université Pierre et Marie Curie https://www.lip6.fr & Paris Centre for Quantum Computing http://www.pcqc.fr/ Paris, France

Tuesday 5 December 2017 14h00-16h00 Lecture Hall 138C

Abstract

The ability to distribute secret keys with information-theoretic security is undoubtedly one of the most important achievements of the field of quantum information processing and communications. Quantum key distribution (QKD) protocols in which the key information is encoded on quantum continuous variables, such as the values of quadrature components of coherent states of light, present the major advantage that they only require standard telecommunication technology, and in particular, that they do not use photon counters. After introducing such protocols, we present the state-of-the-art in long-distance fiber optic experiments for continuous-variable quantum key distribution (CV-QKD). Furthermore, we discuss the resistance of CV-QKD systems to eavesdropping attacks based on auxiliary information channels that are typically not taken into account in security proofs, as well as avenues to exploit the standard components employed in such systems with the goal of developing silicon photonic chips, opening the way to the widespread use of this technology for high-security applications. We will also present other important quantum cryptographic tasks that will be at the heart of future quantum communication networks and will conclude with the main challenges in the field.

Eleni Diamanti a fait ses études à l'Ecole Polytechnique d'Athènes, avant d’obtenir sa thèse en Génie

Electrique en 2006 à l'Université de Stanford aux Etats-Unis. Après un post-doctorat Marie-Curie à l'Institut d'Optique à Palaiseau, elle a rejoint le CNRS en tant que chargée de recherche en 2009 d'abord au LTCI à Télécom ParisTech et, depuis septembre 2016, au LIP6 à l'Université Pierre et Marie Curie. Ses sujets de recherche portent sur la cryptographie quantique théorique et expérimentale et le développement des ressources et des applications pour les réseaux quantiques émergents. Elle est directrice adjointe du Paris Centre for Quantum Computing, membre du comité de pilotage du projet de Domaine d'Intérêt Majeur de la Région Île-de-France sur les Technologies Quantiques, membre du comité scientifique du Ministère de la Recherche sur la même thématique, et membre élu du conseil de gestion du Partenariat Public Privé de la Commission Européenne sur la Photonique.

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