Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

NATO science for peace and security series. B, Physics and biophysics

Quantum Key Distribution Over Free Space

Fabian Beutel, Jasper Rödiger, Nicolas Perlot, Ronald E. Freund, Oliver J. Benson

Published Jan 1, 2018• 0 citations
Publisher
DOI
10.1007/978-94-024-1544-5_18

Related papers

A new scheme for quantum key distribution in free-space

Guoqing Cui, Yuan Lü, Guihua Zeng

Quantum key distribution (QKD) has been proposed for decades. Many applications have been deployed recently for both wired and wireless networks. Especially for optical networks, QKD technique has a great development. But in free-space quantum key distribution still has a lot of problems such as a low bit rate. In this paper we propose a new scheme, combining MIMO (Multiple input multiple output) system and wireless networks for QKD in free-space networks. With the proposed approach, a higher bit rate QKD networks in free-space could be realized theoretically.

Asia-Pacific Conference on Communications (APCC)•Oct 1, 2009•6 citations

Free-Space Quantum Key Distribution

Alberto Carrasco-Casado, Verónica Fernández, Natalia Denisenko

arXiv:1611.03529•Signals and communication technology•Jan 1, 2016•16 citations

Free-Space Phase-Matching Quantum Key Distribution

Yang Yu, Le Wang, Shengmei Zhao +1 more

As a practical version of twin-field quantum key distribution (TF-QKD), phase-matching quantum key distribution (PM-QKD) is able to surpass the linear bound without quantum repeaters. Implementing PM-QKD through free space can guarantee two parties to share unconditionally secure keys between ground stations and mobile platforms. However, atmospheric turbulence decreases the free-space secure key rate as the result of fluctuations of transmittances caused by it. This paper includes two works we do. First, for generality, we derive the secure key rate formula of 4-intensity PM-QKD based on asymmetric channel transmittances. Second, we numerically simulate the performance of PM-QKD in free space and ideal circumstance to study the effect of the atmospheric turbulence.

International Conference on Wireless Communications and Signal Processing (WCSP)•Oct 20, 2021•2 citations

Practical free-space quantum key distribution

P.M. Gorman

•Dec 1, 2010•3 citations

Entanglement-Based Free Space Quantum Key Distribution

Gregor Weihs

Bulletin of the American Physical Society•Jun 8, 2007•0 citations

Free-space quantum-key distribution

W. T. Buttler, Richard Hughes, Paul G. Kwiat +5 more

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. Results show that free-space QKD can provide a secure real-time key distribution between parties who have a need to communicate secretly.

arXiv:quant-ph/9801006•Physical Review A•Apr 1, 1998•89 citations
Quantum key distribution (QKD) has been proposed for decades. Many applications have been deployed recently for both wired and wireless networks. Especially for optical networks, QKD technique has a great development. But in free-space quantum key distribution still has a lot of problems such as a low bit rate. In this paper we propose a new scheme, combining MIMO (Multiple input multiple output) system and wireless networks for QKD in free-space networks. With the proposed approach, a higher bit rate QKD networks in free-space could be realized theoretically.
As a practical version of twin-field quantum key distribution (TF-QKD), phase-matching quantum key distribution (PM-QKD) is able to surpass the linear bound without quantum repeaters. Implementing PM-QKD through free space can guarantee two parties to share unconditionally secure keys between ground stations and mobile platforms. However, atmospheric turbulence decreases the free-space secure key rate as the result of fluctuations of transmittances caused by it. This paper includes two works we do. First, for generality, we derive the secure key rate formula of 4-intensity PM-QKD based on asymmetric channel transmittances. Second, we numerically simulate the performance of PM-QKD in free space and ideal circumstance to study the effect of the atmospheric turbulence.