Two-Dimensional Quantum Key Distribution (QKD) Protocol for Increased Key Rate Fiber-Based Quantum Communications
Beatrice Da Lio, Davide Bacco, Yunhong Ding, Daniele Cozzolino, Kjeld Dalgaard, Karsten K. Rottwitt, Leif Katsuo Oxenløwe · 2017
We experimentally prove a novel two-dimensional QKD scheme, relying on differential phasetime shifting (DPTS) of strongly attenuated weak coherent pulses. We demonstrate QKD transmission up to 170 km standard fiber, and even include a classical channel up to 90 km.