The SECOQC quantum key distribution network in Vienna

Article Article scientifique Article The SECOQC quantum key distribution network in Vienna eng 2009 author Peev M. collaborator Barreiro Claudio 134196 collaborator Fasel Sandrine 699689 collaborator Gisin Nicolas 23716 collaborator Legre Matthieu 530007 collaborator Stucki Damien 502722 collaborator Thew Rob 0000-0003-0188-6053 541344 collaborator Trinkler Patrick 526607 collaborator Vannel Fabien 666594 collaborator Zbinden Hugo 0000-0002-9237-1700 29543 075001 10.1088/1367-2630/11/7/075001 1367-2630 In this paper, we present the quantum key distribution (QKD) network designed and implemented by the European project SEcure COmmunication based on Quantum Cryptography (SECOQC) (2004–2008), unifying the efforts of 41 research and industrial organizations. The paper summarizes the SECOQC approach to QKD networks with a focus on the trusted repeater paradigm. It discusses the architecture and functionality of the SECOQC trusted repeater prototype, which has been put into operation in Vienna in 2008 and publicly demonstrated in the framework of a SECOQC QKD conference held from October 8 to 10, 2008. The demonstration involved one-time pad encrypted telephone communication, a secure (AES encryption protected) video-conference with all deployed nodes and a number of rerouting experiments, highlighting basic mechanisms of the SECOQC network functionality. The paper gives an overview of the eight point-to-point network links in the prototype and their underlying technology: three plug and play systems by id Quantique, a one way weak pulse system from Toshiba Research in the UK, a coherent one-way system by GAP Optique with the participation of id Quantique and the AIT Austrian Institute of Technology (formerly ARC*), an entangled photons system by the University of Vienna and the AIT, a continuous-variables system by Centre National de la Recherche Scientifique (CNRS) and THALES Research and Technology with the participation of Université Libre de Bruxelles, and a free space link by the Ludwig Maximillians University in Munich connecting two nodes situated in adjacent buildings (line of sight 80 m). The average link length is between 20 and 30 km, the longest link being 83 km. The paper presents the architecture and functionality of the principal networking agent—the SECOQC node module, which enables the authentic classical communication required for key distillation, manages the generated key material, determines a communication path between any destinations in the network, and realizes end-to-end secure transport of key material between these destinations. The paper also illustrates the operation of the network in a number of typical exploitation regimes and gives an initial estimate of the network transmission capacity, defined as the maximum amount of key that can be exchanged, or alternatively the amount of information that can be transmitted with information theoretic security, between two arbitrary nodes. Dewey 500.2 Autre Secure Communication based on Quantum Cryptography (SECOQC) 35 Groupe de physique appliquée 135 false New journal of physics 11 7 ca125efe-4335-40c0-a861-bd2a3adcf2eb Article (Published version) Restricted fulltext.pdf 4406352 application/pdf restrictedAccess Faculté des sciences / Section de physique / Groupe de physique appliquée

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The SECOQC quantum key distribution network in Vienna	New journal of physics			2009	831	2

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Fasel, Sandrine