Results 41 to 50 of about 10,496 (211)

Quantum Cryptography in Telecommunications as a New Era of Secure Communications [PDF]

open access: yesIranian Journal of Information Processing & Management
Background: Quantum Key Distribution (QKD) has turned into a crucial point for secure communication in the era of quantum networks. Quantum key distribution provides the client with a theoretically secure key by taking advantage of the principles of ...
Mustafa M. Zayer   +4 more
doaj   +1 more source

Free-space quantum key distribution [PDF]

open access: yes, 1998
A working free-space quantum key distribution (QKD) system has been developed and tested over a 205-m indoor optical path at Los Alamos National Laboratory under fluorescent lighting conditions.
Buttler, W. T.   +7 more
core   +2 more sources

A novel approach to quality-of-service provisioning in trusted relay Quantum Key Distribution networks [PDF]

open access: yes, 2020
In recent years, noticeable progress has been made in the development of quantum equipment, reflected through the number of successful demonstrations of Quantum Key Distribution (QKD) technology. Although they showcase the great achievements of QKD, many
Fazio, Peppino   +8 more
core   +1 more source

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

open access: yesInfoMat, EarlyView.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

Quantum Flows for Secret Key Distribution in the Presence of the Photon Number Splitting Attack

open access: yesEntropy, 2014
Physical implementations of quantum key distribution (QKD) protocols, like the Bennett-Brassard (BB84), are forced to use attenuated coherent quantum states, because the sources of single photon states are not functional yet for QKD applications. However,
Luis A. Lizama-Pérez   +3 more
doaj   +1 more source

Phase-matching quantum key distribution with advantage distillation

open access: yesNew Journal of Physics, 2022
Phase-matching quantum key distribution (PM-QKD) provides a promising solution to surpass the fundamental rate–distance bound without quantum repeaters.
Rui-Qiang Wang   +7 more
doaj   +1 more source

On single-photon quantum key distribution in the presence of loss [PDF]

open access: yes, 2006
We investigate two-way and one-way single-photon quantum key distribution (QKD) protocols in the presence of loss introduced by the quantum channel. Our analysis is based on a simple precondition for secure QKD in each case. In particular, the legitimate
A. Peres   +10 more
core   +2 more sources

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

open access: yesLaser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil   +6 more
wiley   +1 more source

Two-dimensional quantum key distribution (QKD) protocol for increased key rate fiber-based quantum communications [PDF]

open access: yes2017 European Conference on Optical Communication (ECOC), 2017
We experimentally prove a novel two-dimensional QKD scheme, relying on differential phasetime shifting (DPTS) of strongly attenuated weak coherent pulses. We demonstrate QKD transmission up to 170 km standard fiber, and even include a classical channel up to 90 km.
da Lio, Beatrice   +6 more
openaire   +3 more sources

Wireless quantum key distribution at terahertz frequencies: Opportunities and challenges

open access: yesIET Quantum Communication
Quantum key distribution (QKD) is one of the major applications of quantum information technology. It can provide ultra‐secure key distribution with security guaranteed by the laws of quantum physics. Quantum key distribution is necessary to protect data
Neel Kanth Kundu   +2 more
doaj   +1 more source

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