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Proceedings Paper

Entangled free-space quantum key distribution
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Paper Abstract

We have constructed an entanglement based quantum key distribution system that links three buildings, covering a largest distance of 1575 m. The photons are transmitted via telescopes through free space. In this paper, we give a detailed description of our system and the protocol that we implemented. We analyze system components and design considerations. Some preliminary results of a one-link experiment are presented.

Paper Details

Date Published: 10 September 2007
PDF: 9 pages
Proc. SPIE 6780, Quantum Communications Realized, 678013 (10 September 2007); doi: 10.1117/12.734947
Show Author Affiliations
Gregor Weihs, Univ. of Waterloo (Canada)
Christopher Erven, Univ. of Waterloo (Canada)


Published in SPIE Proceedings Vol. 6780:
Quantum Communications Realized
Yasuhiko Arakawa; Masahide Sasaki; Hideyuki Sotobayashi, Editor(s)

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