SUM23 – SiGe

Towards an All-Silicon DV-QKD Transmitter Sourced by a Ge-on-Si Light Emitter

IEEE Summer Topicals 2023, Sicily, Italy, Jul. 2023, WD1.3


Florian Honz, Nemanja Vokić, Philip Walther, Hannes Hübel, and Bernhard Schrenk


We investigate the behavior of a Ge-on-Si light source and demonstrate its feasibility for polarization-encoded discrete-variable quantum key distribution following the BB84 protocol, enabling a potential “all-silicon” QKD scheme which can operate well below the necessary QBER limit and successfully generate secret keys.

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