Quantum key distribution over 25 km with an all-fiber continuous-variable system
Jérôme Lodewyck,Matthieu R. Bloch,Raúl García-Patrón,Simon Fossier,Evgueni Karpov,Eleni Diamanti,Thierry Debuisschert,Nicolas J. Cerf,Rosa Tualle-Brouri,Steven W. McLaughlin,Philippe Grangier +10 more
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TLDR
In this paper, a reverse-reconciliated coherent-state continuous-variable quantum key distribution system is described, with which secret keys are generated at a rate of more than 2 kb/s over 25 km of optical fiber.Abstract:
We report on the implementation of a reverse-reconciliated coherent-state continuous-variable quantum key distribution system, with which we generated secret keys at a rate of more than 2 kb/s over 25 km of optical fiber. Time multiplexing is used to transmit both the signal and phase reference in the same optical fiber. Our system includes all experimental aspects required for a field implementation of a quantum key distribution setup. Real-time reverse reconciliation is achieved by using fast and efficient low-density parity check error correcting codes.read more
Citations
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The security of practical quantum key distribution
Valerio Scarani,Helle Bechmann-Pasquinucci,Nicolas J. Cerf,Miloslav Dušek,Norbert Lütkenhaus,Momtchil Peev +5 more
TL;DR: Essential theoretical tools that have been developed to assess the security of the main experimental platforms are presented (discrete- variable, continuous-variable, and distributed-phase-reference protocols).
Journal ArticleDOI
Gaussian quantum information
Christian Weedbrook,Stefano Pirandola,Raúl García-Patrón,Nicolas J. Cerf,Timothy C. Ralph,Jeffrey H. Shapiro,Seth Lloyd +6 more
TL;DR: This review focuses on continuous-variable quantum information processes that rely on any combination of Gaussian states, Gaussian operations, and Gaussian measurements, including quantum communication, quantum cryptography, quantum computation, quantum teleportation, and quantum state and channel discrimination.
Gaussian quantum information
Christian Weedbrook,Stefano Pirandola,Raúl García-Patrón,Nicolas J. Cerf,Timothy C. Ralph,Jeffrey H. Shapiro,Seth Lloyd +6 more
TL;DR: In this article, a review of the state of the art in continuous-variable quantum information processing can be found, ranging from the basic theoretical tools and landmark experimental realizations to the most recent successful developments.
Journal ArticleDOI
Continuous-variable optical quantum-state tomography
A. I. Lvovsky,Michael G. Raymer +1 more
TL;DR: In this paper, a review of the latest developments in continuous-variable quantum-state tomography of optical fields and photons, placing a special emphasis on its practical aspects and applications in quantum information technology, is presented.
Journal ArticleDOI
The SECOQC quantum key distribution network in Vienna
Momtchil Peev,Christoph Pacher,Romain Alléaume,Claudio Barreiro,Jan Bouda,W. Boxleitner,T. Debuisschert,Eleni Diamanti,Eleni Diamanti,Mehrdad Dianati,James F. Dynes,Sandrine Fasel,Simon Fossier,M. Furst,J. D. Gautier,Nicolas Gisin,Philippe Grangier,Andreas Happe,Y. Hasani,Michael Hentschel,Hannes Hübel,G. Humer,Thomas Länger,Matthieu Legre,Roland Lieger,Jérôme Lodewyck,Thomas Lorünser,Norbert Lütkenhaus,Norbert Lütkenhaus,A. Marhold,Thomas Matyus,O. Maurhart,L. Monat,Sebastian Nauerth,J-B. Page,Andreas Poppe,E. Querasser,G. Ribordy,S. Robyr,Louis Salvail,Andrew W. Sharpe,Andrew J. Shields,Damien Stucki,M. Suda,C. Tamas,Thomas Themel,Rob Thew,Yann Thoma,Alexander Treiber,Patrick Trinkler,Rosa Tualle-Brouri,Fabien Vannel,Nino Walenta,Henning Weier,Harald Weinfurter,Ilse Wimberger,Zhiliang Yuan,Hugo Zbinden,Anton Zeilinger +58 more
TL;DR: 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.
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