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Q: Fachverband Quantenoptik und Photonik
Q 41: Quantum Information (Quantum Communication and Quantum Repeater) I
Q 41.6: Vortrag
Donnerstag, 12. März 2020, 12:30–12:45, e001
Integrated photonics for quantum communications in space — Ömer Bayraktar1, •Jonas Pudelko1, Winfried Boxleitner2, Christoph Pacher2, Gerd Leuchs1, and Christoph Marquardt1 — 1Max Planck Institute for the Science of Light, Erlangen, Germany — 2Austrian Institute of Technology, Vienna, Austria
The limited range of quantum key distribution (QKD) in fiber based systems led to several projects aiming for the development of a satellite based QKD infrastructure. Photonic integrated circuits (PICs) are a convenient way to implement all necessary optical functions, while meeting the stringent demands on size, weight and power in satellite missions.
In this work, we present our payload designed for the demonstra- tion of integrated quantum communication technology in space and its first tests. It is based on two Indium-Phosphide PICs implement- ing a source for modulated weak coherent states as well as a quantum random number generator (QRNG) based on homodyne measurements of the quantum mechanical vacuum state. The whole system is imple- mented on a 10 cm x 10 cm PCB including all electronics and process- ing units, while also being compatible to the CubeSat standard.
These developments will be tested as part of the CubeSat mission QUBE.