Daylight operation of a free space, entanglement-based quantum key distribution system

verfasst von: M.P. Peloso, I. Gerhardt, C. Ho, A. Lamas-Linares, C. Kurtsiefer
Abstract: Many quantum key distribution (QKD) implementations using a free space transmission path are restricted to operation at night time in order to distinguish the signal photons used for a secure key establishment from the background light. Here, we present a lean entanglement-based QKD system overcoming that limitation. By implementing spectral, spatial and temporal filtering techniques, we establish a secure key continuously over several days under varying light and weather conditions.
Organisationseinheit(en): Institut für Festkörperphysik
Typ: Artikel
Journal: New journal of physics
Band: 11
Seiten: 045007 (13pp)
ISSN: 1367-2630
Publikationsdatum: 2009
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
Elektronische Version(en): http://stacks.iop.org/1367-2630/11/045007 (Zugang: Unbekannt)