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Q: Fachverband Quantenoptik und Photonik

Q 22: Poster II

Q 22.82: Poster

Tuesday, March 7, 2023, 16:30–19:00, Empore Lichthof

Photonic integrated receiver concept for quantum communication — •Marco Dietrich^1,2, Bastian Hacker¹, Jonas Pudelko^1,2, Ömer Bayraktar^1,2, Francesco Morichetti³, and Christoph Marquardt^1,2 — ¹Max Planck Institut für die Physik des Lichts, Staudstr. 2, 91058 Erlangen — ²Institut für Optik, Information und Photonik, FAU Erlangen-Nürnberg, Staudstr. 7, 91058 Erlangen — ³Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy

Quantum Key Distribution (QKD) in free space requires the efficient reception of distorted optical modes. We investigate an interferometer mesh on a Photonic Integrated Chip (PIC) with the goal to correct the individual optical phases of several spatial input regions and coherently combine an arbitrary incident wavefront into a single fiber mode. Active elements allow for dynamical adaption to a changing input mode. This approach provides good passive stability and offers high scalability. We study this concept in the context of quantum communication with a realistic cubesat payload.