Space-QUEST: Experiments with quantum entanglement in space

The European Space Agency (ESA) has supported a range of studies in the field of quantum physics and quantum information science in space for several years, and consequently we have submitted the mission proposal Space-QUEST (Quantum Entanglement for Space Experiments) to the European Life and Physical Sciences in Space Program. We propose to perform space-to-ground quantum communication tests from the International Space Station (ISS). We present the proposed experiments in space as well as the design of a space based quantum communication payload.Comment: 4 pages, 1 figure, accepted for the 59th International Astronautical Congress (IAC) 200

Optical GEO Feeder Link Design

Abstract: Telecommunication satellites must follow the advances of terrestrial network capacities and increase their total throughputs in order to remain competitive. This paper shows how the terrestrial fibre technology at 1550-nm wavelength can be extended to support an optical feeder link between ground and a GEO satellite. With 100 Gb/s in a single direction, an optical uplink would outperform the near-term Ka-band systems. Mitigation techniques against clouds and turbulence are described. The impact of satellite transparency on the optical transmission system is discussed. To increase the profitability of the optical solution, cost and link availability associated with various ground station networks should be carefully assessed

Three telescope nuller based on multibeam injection into single-mode waveguide

International audienc

Three telescope nuller based on multibeam injection into single-mode waveguide

International audienc

Three telescope nuller based on multibeam injection into single-mode waveguide

International audienc