Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 62: Quantum Information: Quantum Computing and Communication III
Q 62.2: Vortrag
Freitag, 4. März 2016, 11:15–11:30, e214
Upgrading existing Laser Communication Terminals for Satellite Quantum Communication — •Dominique Elser1, Kevin Günthner1, Imran Khan1, Birgit Stiller1, Christoph Marquardt1, Gerd Leuchs1, Karen Saucke2, Daniel Tröndle2, Frank Heine2, Stefan Seel2, Peter Greulich2, Herwig Zech2, Björn Gütlich3, Ines Richter3, and Rolf Meyer3 — 1Max Planck Institute for the Science of Light, Erlangen, Germany and Institute of Optics, Information and Photonics, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany — 2Tesat-Spacecom GmbH & Co. KG, Backnang, Germany — 3Space Administration, German Aerospace Center (DLR), Bonn, Germany
By harnessing quantum effects, we nowadays can use encryption that is information-theoretically secure. These fascinating quantum features have been implemented in metropolitan quantum networks around the world. In order to interconnect such metropolitan networks over long distances, optical satellite communication is the method of choice. Standard telecommunication components allow one to efficiently implement quantum communication by measuring field quadratures (continuous variables). This opens the possibility to upgrade the existing Laser Communication Terminals (LCTs) to quantum key distribution (QKD). First satellite measurement campaigns are currently validating our approach [1].
[1] D. Elser et al., International Conference on Space Optical Systems and Applications (IEEE ICSOS 2015), October 27 and 28, 2015, New Orleans, USA, arXiv:1510.04507 [quant-ph] (2015).