Polarization-Encoded BB84 QKD Transmitter Sourced by a SiGe Light Emitter
OFC 2023, San Diego, USA, Mar. 2023, M1I.5
Florian Honz, Nemanja Vokić, Philip Walther, Hannes Hübel and Bernhard Schrenk
We demonstrate a polarization-encoded BB84 transmitter sourced by a SiGe light source and show that such a potentially “all-silicon” QKD scheme can operate well below the QBER threshold at which secret keys can be established.