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

Acta Astronautica

Free-space quantum cryptography with quantum and telecom communication channels

Morio Toyoshima, Yoshihisa Takayama, Werner Klaus, Hiroo Kunimori, Mikio Fujiwara, Masahide Sasaki

Published Feb 9, 2008• 9 citations
Publisher
DOI
10.1016/j.actaastro.2007.12.012

Related papers

Experimental realization of quantum cryptography communication in free space

Chuan Xi Wang, Jingfu Zhang, P. X. Wang +3 more

Science in China. Series G, Physics, mechanics & astronomy/Science in China. Series G, Physics, Mechanics & Astronomy•Apr 1, 2005•11 citations

Optical Free-Space Communication on Earth and in Space Regarding Quantum Cryptography Aspects

Christian Fuchs, Dirk Giggenbach

Lecture notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering•Jan 1, 2010•4 citations

Quantum Communication and Quantum Cryptography

David S. Simon

Undergraduate texts in physics•Jan 1, 2025•1 citation

Free space quantum system based on quantum secure direct communication

Hua Ge, Wenyu Liu

A new practical free space quantum communication system is proposed, it is based on the principle of quantum secure direct communication. Quantum cryptography is a practical method to realize free space optical communication. Different from the existing free space quantum key distribution communication system, the free space quantum secure direct communication is deterministic and the system is more simple. In this paper, a new structure of four transmitting channels is prensented, this structure could increase the security and capacity of system. The setup of transmitter and receiver of each transmitting channel is discussed in detail, and the communication process is analyzed. The result shows that this free space quantum system could be realized and can work over long distance.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Oct 18, 2007•1 citation

Free-Space Quantum Cryptography

Christian Kurtsiefer, M. Halder, Harald Weinfurter +4 more

Optical science and engineering•Nov 14, 2005•0 citations

On a two-pass scheme without a faraday mirror for free-space relativistic quantum cryptography

Konstantin Kravtsov, I. V. Radchenko, A. V. Korol’kov +2 more

The stability of destructive interference independent of the input polarization and the state of a quantum communication channel in fiber optic systems used in quantum cryptography plays a principal role in providing the security of communicated keys. A novel optical scheme is proposed that can be used both in relativistic quantum cryptography for communicating keys in open space and for communicating them over fiber optic lines. The scheme ensures stability of destructive interference and admits simple automatic balancing of a fiber interferometer.

Journal of Experimental and Theoretical Physics•May 1, 2013•1 citation
A new practical free space quantum communication system is proposed, it is based on the principle of quantum secure direct communication. Quantum cryptography is a practical method to realize free space optical communication. Different from the existing free space quantum key distribution communication system, the free space quantum secure direct communication is deterministic and the system is more simple. In this paper, a new structure of four transmitting channels is prensented, this structure could increase the security and capacity of system. The setup of transmitter and receiver of each transmitting channel is discussed in detail, and the communication process is analyzed. The result shows that this free space quantum system could be realized and can work over long distance.
The stability of destructive interference independent of the input polarization and the state of a quantum communication channel in fiber optic systems used in quantum cryptography plays a principal role in providing the security of communicated keys. A novel optical scheme is proposed that can be used both in relativistic quantum cryptography for communicating keys in open space and for communicating them over fiber optic lines. The scheme ensures stability of destructive interference and admits simple automatic balancing of a fiber interferometer.