Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 35: Quantum Information (Quantum Communication) II
Q 35.7: Vortrag
Mittwoch, 16. März 2022, 15:30–15:45, Q-H12
Integrated photonics for quantum communications on a CubeSat — •Jonas Pudelko1,2, Ömer Bayraktar1,2, Imran Khan1,2, Winfried Boxleitner3, Stefan Petscharnig3, Christoph Pacher3, Gerd Leuchs1,2, and Christoph Marquardt1,2 — 1Max Planck Institute for the Science of Light, Erlangen, Germany — 2Institute of Optics, Information and Photonics, Friedrich-Alexander University Erlangen-Nürnberg, Germany — 3AIT Austrian Institute of Technology GmbH, Center for Digital Safety & Security, 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 for QKD, while meeting the stringent demands on size, weight and power in satellite missions.
In this work, we present our payload intended for the demonstration of integrated quantum communication technology in space. It is based on two Indium-Phosphide PICs implementing 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 implemented on a 10 cm x 10 cm PCB including electronics, making it compatible to the CubeSat standard.
These developments will be tested as a part of the CubeSat mission QUBE, which is scheduled for launch in 2022.