Shortwave DPS-QKD Employing a SiN Micro-Ring Resonator as Compact Quantum State Analyser

Florian Honz, Paul Müllner, Michael Hentschel +6

We show simplified DPS-QKD using a SiN micro-ring resonator operated at 852 nm. A raw-key rate of up to 25.3 kb/s is reached at a QBER suitable for secure-key extraction. Short-rea…