Journal ArticleDOI
Quantum Random-number Generation and Key Sharing
TLDR
A simple approach to generating the random measurement bases used in quantum cryptography systems which exploits random partition at a beam splitter, reducing system complexity and losses.Abstract:
We review the status of interferometry-based quantum cryptography and compare photon-pair and faint-pulse schemes. The key technical limitations in both cases are the propagation losses and detector performance. We also discuss a simple approach to generating the random measurement bases used in quantum cryptography systems which exploits random partition at a beam splitter. This removes the need for active components in the receiver, reducing system complexity and losses.read more
Citations
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Journal ArticleDOI
Quantum Cryptography
TL;DR: The author revealed that quantum teleportation as “Quantum one-time-pad” had changed from a “classical teleportation” to an “optical amplification, privacy amplification and quantum secret growing” situation.
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Invited review article: Single-photon sources and detectors
TL;DR: The current status of single-photon-source and single-Photon-detector technologies operating at wavelengths from the ultraviolet to the infrared are reviewed and applications of these technologies to quantum communication are discussed.
Journal ArticleDOI
Single-photon sources
Brahim Lounis,Michel Orrit +1 more
TL;DR: In this article, the authors discuss potential applications of single-photon states to optical processing of quantum information: cryptography, computing and communication, and compare the advantages and weaknesses of various single nanometre-scale objects used as singlephoton sources: atoms or ions in the gas phase and, in condensed matter, organic molecules, defect centres, semiconductor nanocrystals and heterostructures.
Journal ArticleDOI
Step-by-Step Engineered Multiparticle Entanglement
Arno Rauschenbeutel,Gilles Nogues,S. Osnaghi,Patrice Bertet,Michel Brune,Jean-Michel Raimond,Serge Haroche +6 more
TL;DR: This work has demonstrated a programmable procedure for two atoms and a single-photon cavity mode, engineering and analyzing a three-particle entangled state by a succession of controlled steps that address the particles individually.
Journal ArticleDOI
Quantum random number generators
TL;DR: This review discusses the current status of devices that generate quantum random numbers, and discusses the most fundamental processes based on elementary quantum mechanical processes.
References
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Journal ArticleDOI
Inhibited Spontaneous Emission in Solid-State Physics and Electronics
TL;DR: If a three-dimensionally periodic dielectric structure has an electromagnetic band gap which overlaps the electronic band edge, then spontaneous emission can be rigorously forbidden.
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Quantum cryptography based on Bell's theorem.
TL;DR: 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.
Journal ArticleDOI
Quantum cryptography using any two nonorthogonal states
TL;DR: It is shown that in principle any two nonorthogonal quantum states suffice, and a practical interferometric realization using low-intensity coherent light pulses is described.
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Quantum cryptography without Bell's theorem.
TL;DR: A related but simpler EPR scheme is described and it is proved it secure against more general attacks, including substitution of a fake EPR source and the original 1984 key distribution scheme of Bennett and Brassard, which uses single particles instead of EPR pairs.
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Conjugate coding
TL;DR: It is shown that in compensation for this "quantum noise", quantum mechanics allows us novel forms of coding without analogue in communication channels adequately described by classical physics.