Journal ArticleDOI
Quantum Cryptography with Polarized Photons in Optical Fibres: Experiment and Practical Limits
TLDR
In this paper, an all-fibre quantum cryptography set-up based on the polarization of single photon pulses is described, and the feasibility of establishing a key over more than 1 km has been experimentally demonstrated.Abstract:
An all-fibre quantum cryptography set-up based on the polarization of single photon pulses is described. The feasibility of establishing a key over more than 1 km has been experimentally demonstrated. The limits due to the topological effects, the birefringence, and the polarization mode dispersion of fibres are discussed. A set-up using only two non-orthogonal polarization states and polarizers instead of analysers is proposed.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.
Journal ArticleDOI
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).
Repository
Bibliographic guide to the foundations of quantum mechanics and quantum information
TL;DR: A collection of references (papers, books, preprints, book reviews, Ph. D. thesis, patents, web sites, etc.), sorted alphabetically and classified by subject, on foundations of quantum mechanics and quantum information can be found in this article.
Book ChapterDOI
Chapter 5 - Quantum cryptography
TL;DR: An elementary review article on quantum cryptography and its applications in medicine, science and technology.
Journal ArticleDOI
Phase-modulation transmission system for quantum cryptography.
TL;DR: A new method for quantum key distribution is described that utilizes phase modulation of sidebands of modulation by use of integrated electro-optic modulators at the transmitting and receiving modules to allow quantum cryptography to be carried out with high flexibility byUse of conventional devices.
References
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Book
Quantum Theory: Concepts and Methods
Asher Peres,Leslie E. Ballentine +1 more
TL;DR: In this article, the authors introduce the concept of complex vector space and describe a set of properties of composite systems, including Bell's Theorem, and the notion of spacetime symmetry.
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.
Journal ArticleDOI
Observation of Berry's topological phase by use of an optical fiber.
Akira Tomita,Raymond Y. Chiao +1 more
TL;DR: The experiment confirmed at the classical level that the angle of rotation of linearly polarized light in this fiber gives a direct measure of Berry's phase, and the topological nature of this effect was verified, i.e., the rotation was found to be independent of deformations of fiber path if the solid angle of the path in momentum space stayed constant.
Journal ArticleDOI
Phenomenological approach to polarisation dispersion in long single-mode fibres
C.D. Poole,Richard E. Wagner +1 more
TL;DR: In this paper, a model for polarisation dispersion in single-mode fibres of arbitrary length and configuration is proposed based on the existence of principal states of polarisation, i.e., two orthogonal input states of polarity whose corresponding output states exhibit zero dispersion.
Journal ArticleDOI
Manifestations of Berry's Topological Phase for the Photon
Raymond Y. Chiao,Yong-Shi Wu +1 more
TL;DR: Recently, Berry recognized in quantum mechanics a topological phase factor arising from the adiabatic transport of a system around a closed circuit, which is essentially the Aharonov-Bohm effect in parameter space.