OFC25 – FSOpol
FPA Beamforming for Alignment-Tolerant FSO QKD Links
OFC 2025, San Francisco, USA, Mar.-Apr. 2025, Th3I.3
Authors
Florian Honz, Winfried Boxleitner, Michael Hentschel, Philip Walther, Hannes Hübel, and Bernhard Schrenk
Abstract
We demonstrate focal plane array beamforming for semi-blind deployments of free-space optical QKD links. We accomplish a secure-key rate of 1.2 kb/s at a QBER of 9.1% over a 63-m outdoor link during full sunshine.