Free-space measurement-device-independent quantum-key-distribution protocol using decoy states with orbital angular momentum
Wang Lea), Zhao Sheng-Mei†a),b), Gong Long-Yanc), Cheng Wei-Wena)
       
The key generation rate performance of the OAM-MDI-QKD protocol against the transmission distance, in comparison with that of the polarization-based MDI-QKD protocol. Here, link attenuation α is 1.38×10−4 (0.6 dB/km) and no atmospheric turbulence.