Practical measurement-device-independent quantum key distribution with advantage distillation

The advantage distillation (AD) technology provides an efficient scheme to substantially improve the performance of quantum key distribution (QKD). Generally, inserting an additional AD step into measurement-device-independent QKD (MDI-QKD) can enhance the secret key rate and transmission distance drastically. To further promote the performance of practical MDI-QKD systems, we extend the AD technology into MDI-QKD when considering statistical fluctuations. Simulation results show that the AD method has great superiority in improving the performance of practical MDI-QKD systems.

Automated summary

The advantage distillation (AD) technology is efficient in enhancing the performance of quantum key distribution (QKD). By inserting an additional AD step into measurement-device-independent QKD (MDI-QKD), the secret key rate and transmission distance can be significantly improved. When considering statistical fluctuations, extending the application of AD technology in practical MDI-QKD systems demonstrates great superiority in performance enhancement.