Results 51 to 60 of about 8,299 (155)

Ultralow Photon Flux OWC Links Using UV‐C Single‐Photon Detection

Laser &Photonics Reviews, EarlyView.
This work presents ultralow photon flux UV‐C optical wireless communication (OWC) links using a micro‐LED and a silicon photomultiplier (SiPM)‐based single‐photon detector (SPD). A record‐low transmission of 7.7 photons per bit and a maximum data rate of 120 Mbit s−1 are achieved. Furthermore, single‐photon links highlight the potential for a future UV‐
Feng Liu, James Farmer, Grahame Faulkner, Jonathan J. D. McKendry, Enyuan Xie, Qianfang Zheng, Zhaoming Wang, Jianming Wang, Jordan Hill, Johannes Herrnsdorf, Martin D. Dawson, Dominic O'Brien   +11 more
wiley   +1 more source

A Quantum solution to the Byzantine agreement problem [PDF]

, 2001
We present a solution to an old and timely problem in distributed computing. Like Quantum Key Distribution (QKD), quantum channels make it possible to achieve taks classically impossible.
A. Ekert, A. Karlsson, C. Bennett, E. F. Galvão, L. Lamport, M. Fitzi, M. Hillery, M. J. Fischer, Matthias Fitzi, Nicolas Gisin, P. W. Shor, R. Cleve, Ueli Maurer, W. Tittel   +13 more
core   +1 more source

Wireless quantum key distribution at terahertz frequencies: Opportunities and challenges

IET 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, Matthew R. McKay, Ranjan K. Mallik   +2 more
doaj   +1 more source

Weltweite Vernetzung der Quantentechnologien: Quantenkommunikation via Satellit

Physik in unserer Zeit, Volume 56, Issue 3, Page 116-123, May 2025.
Quantentechnologien sind auf dem Weg, die Welt zu verändern. Die weltweite Vernetzung kann ihr Potenzial vervielfachen und neue Anwendungsmöglichkeiten eröffnen. Zusammenfassung Die Quantenschlüsselverteilung ist eine der fortschrittlichsten Quantentechnologien. Entsprechende Komponenten sind kommerziell erhältlich.
Kai Bongs, Christian Fuchs, Kaisa Laiho, Florian Moll, Sabine Wölk, Matthias Zimmermann   +5 more
wiley   +1 more source

Quantum secure communication network architecture and mobile application solution

Dianxin kexue, 2018
As the first practical representative technology in the new quantum revolution,quantum key distribution (QKD) brings a promising solution to achieve long-term security guarantee,which has made series of progress from research to practical deployment and ...
Jianquan WANG, Zhangchao MA, Xinzhong LI, Lei SUN, Changwei HU   +4 more
doaj   +2 more sources

Numerical finite-key analysis of quantum key distribution

npj Quantum Information, 2020
Quantum key distribution (QKD) allows for secure communications safe against attacks by quantum computers. QKD protocols are performed by sending a sizeable, but finite, number of quantum signals between the distant parties involved. Many QKD experiments,
Darius Bunandar, Luke C. G. Govia, Hari Krovi, Dirk Englund   +3 more
doaj   +1 more source

All-Fiber and Calibration-Free Intrinsically Stable Polarization-Modulated Units for Measurement-Device-Independent Quantum Key Distribution

IEEE Photonics Journal, 2023
There are several groups have implemented polarization encoding measurement-device-independent quantum key distribution (MDI-QKD). However, these groups use manual polarization controller to achieve the initial polarization state for encoders, and some ...
Yongjie Chen, Naida Mo, Jindong Wang, Jianling Yin, Tianming Zhao, Zhengjun Wei, Yafei Yu, Zhiming Zhang   +7 more
doaj   +1 more source

Field-Trial of Machine Learning-Assisted Quantum Key Distribution (QKD) Networking with SDN [PDF]

2018 European Conference on Optical Communication (ECOC), 2018
We demonstrated, for the first time, a machine-learning method to assist the coexistence between quantum and classical communication channels. Software-defined networking was used to successfully enable the key generation and transmission over a city and campus network.
Ou, Yanni, Hugues Salas, Emilio, Ntavou, Foteini, Wang, Rui, Bi, Yu, Yan, Shuangyi, Kanellos, George, Nejabati, Reza, Simeonidou, Dimitra   +8 more
openaire   +3 more sources

Photon Number Coherence in Quantum Dot‐Cavity Systems can be Enhanced by Phonons

Advanced Quantum Technologies, EarlyView.
Photon number coherence (PNC) is important for quantum cryptography. Because of that, the PNC within a quantum dot‐cavity system is investigated theoretically. Phonons, which interact with the quantum dot, surprisingly do not necessarily decrease PNC. It is demonstrated that it is possible to optimize other figures of merit without significant penalty ...
Paul C. A. Hagen, Mathieu Bozzio, Moritz Cygorek, Doris E. Reiter, Vollrath M. Axt   +4 more
wiley   +1 more source

One-way Quantum Key Distribution System based on Planar Lightwave Circuits

, 2006
We developed a one-way quantum key distribution (QKD) system based upon a planar lightwave circuit (PLC) interferometer. This interferometer is expected to be free from the backscattering inherent in commercially available two-way QKD systems and phase ...
Nambu, Yoshihiro, Tomita, Akihisa, Yoshino, Ken'ichiro   +2 more
core   +1 more source