Results 41 to 50 of about 1,706 (214)

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

Iranian 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, Abdul Monem S. Rahma, Pirmatov Abdymanap Ziiaidinovich, Samer Saeed Issa, Khalid Waleed Nassar Almansoori   +4 more
doaj   +1 more source

Protocol‐Agnostic Meta Key Distribution for Encrypted Wireless Communications Enabled by Space‐Time‐Coding Metasurface

Advanced Science, EarlyView.
This paper presents a programmable metasurface‐based Meta Key Distribution (MKD) system for secure, protocol‐independent key exchange in indoor wireless settings. By embedding entropy into the wireless channel, it enables lightweight, compatible cryptographic key generation.
Xinyu Li, Long Chen, Guanxiong Shen, Kezhan Zhao, Ze Gu, Qian Ma, Jian Wei You, Tie Jun Cui   +7 more
wiley   +1 more source

Monolithic Silicon Photonic Transceiver for 160 km Multi‐Channel Quantum Entanglement Distribution in Fiber Network

Laser &Photonics Reviews, Volume 20, Issue 1, 8 January 2026.
The paper demonstrates a chip scale (4.5 x 4.5 mm2) silicon integrated system that is capable of distributing entangled photons over 160 km single mode fibers without dispersion compensations and external optical filters. The results highlight the potential for massive production and large‐scale deployed quantum integrated circuits for a future ...
Yue Qin, Hongnan Xu, Hon Ki Tsang
wiley   +1 more source

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

2017 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, Bacco, Davide, Ding, Yunhong, Cozzolino, Daniele, Dalgaard, Kjeld, Rottwitt, Karsten, Oxenløwe, Leif Katsuo   +6 more
openaire   +3 more sources

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

Satellite Quantum Communications When Man-in-the-Middle Attacks Are Excluded

Entropy, 2019
An application of quantum communications is the transmission of qubits to create shared symmetric encryption keys in a process called quantum key distribution (QKD). Contrary to public-private key encryption, symmetric encryption is considered safe from (
Tom Vergoossen, Robert Bedington, James A. Grieve, Alexander Ling   +3 more
doaj   +1 more source

Phase-matching quantum key distribution with advantage distillation

New 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, Chun-Mei Zhang, Zhen-Qiang Yin, Hong-Wei Li, Shuang Wang, Wei Chen, Guang-Can Guo, Zheng-Fu Han   +7 more
doaj   +1 more source

Secure Authentication via Quantum Physical Unclonable Functions: A Review

Advanced Quantum Technologies, Volume 9, Issue 1, January 2026.
This in‐depth review article examines the origins, development, and evolution of Quantum Physical Unclonable Functions (QPUFs), with a particular focus on their use in secure authentication. The topic is motivated and introduced in detail, addressing both theoretical foundations and practical implementations, and is supported by a systematic article ...
Pol Julià Farré, Vladlen Galetsky, Mohamed Belhassen, Gregor Pieplow, Kumar Nilesh, Holger Boche, Tim Schröder, Janis Nötzel, Christian Deppe   +8 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

Optimized Spectral Purity of Heralded Single Photons at the Telecom O‐Band

Advanced Physics Research, Volume 4, Issue 12, December 2025.
Optimization of heralded single‐photon purity is demonstrated in the telecom O‐band, where photon pulses travel through optical fiber with low loss and minimal distortion. A phase‐matching coherence‐lengthmodulation method achieves over 99.4% spectral purity across several group‐velocity‐matching conditions, including some accessible with standard ...
Wu‐Hao Cai, Soyoung Baek, Rui‐Bo Jin, Fumihiro Kaneda   +3 more
wiley   +1 more source