Journal ArticleDOI
Quantum cryptography based on Bell's theorem.
TLDR
Practical application of the generalized Bells theorem in the so-called key distribution process in cryptography is reported, based on the Bohms version of the Einstein-Podolsky-Rosen gedanken experiment andBells theorem is used to test for eavesdropping.Abstract:
Practical application of the generalized Bells theorem in the so-called key distribution process in cryptography is reported. The proposed scheme is based on the Bohms version of the Einstein-Podolsky-Rosen gedanken experiment and Bells theorem is used to test for eavesdropping. © 1991 The American Physical Society.read more
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Journal ArticleDOI
Quantum secure direct communication with high-dimension quantum superdense coding
TL;DR: A protocol that combines the ideas of block transmission, the ping-pong quantum secure direct communication protocol, and quantum superdense coding has the advantage of being secure and of high source capacity.
Journal ArticleDOI
A semiconductor source of triggered entangled photon pairs
R. M. Stevenson,Robert J. Young,Robert J. Young,Paola Atkinson,Ken Cooper,David A. Ritchie,Andrew J. Shields +6 more
TL;DR: This work demonstrates triggered photon pair emission from single quantum dots suggestive of polarization entanglement by tuning the splitting to zero, and suggests that a triggered entangled photon pair source could be implemented by a simple semiconductor light-emitting diode.
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.
Journal ArticleDOI
Hybrid threshold adaptable quantum secret sharing scheme with reverse Huffman-Fibonacci-tree coding
TL;DR: A novel hybrid threshold adaptable quantum secret sharing scheme, using an m-bonacci orbital angular momentum pump, Lagrange interpolation polynomials, and reverse Huffman-Fibonacci-tree coding, which can detect eavesdropping without joint quantum operations and permits secret sharing for an arbitrary but no less than threshold-value number of classical participants with much lower bandwidth.
Journal ArticleDOI
Environment-Induced Sudden Death of Entanglement
Marcelo P. Almeida,F. de Melo,M. Hor-Meyll,Alejo Salles,Stephen P. Walborn,P. H. Souto Ribeiro,Luiz Davidovich +6 more
TL;DR: It is shown that, even when the environment-induced decay of each system is asymptotic, quantum entanglement may suddenly disappear, this “sudden death” constitutes yet another distinct and counterintuitive trait of entangled systems.