Large-Alphabet Encoding Schemes for Floodlight Quantum Key Distribution
Quntao Zhuang, Zheshen Zhang, Jeffrey H. Shapiro · Conference on Lasers and Electro-Optics · 2017
Floodlight quantum key distribution (FL-QKD) uses binary phase-shift keying (BPSK) of multiple optical modes to achieve Gbps secret-key rates (SKRs) at metropolitan-area distances. We show that FL-QKD’s SKR can be doubled by using 32-ary PSK.