Field experimental mode-pairing quantum key distribution with intensity fluctuations

• DOI: 10.1364/ol.538457
• Publication Date: 2024-10-30T02:00:12Z
• Authors: Zhenhua Li; Tianqi Dou; Ming Cheng; Yang Liu; Jianjun Tang
• Keywords: Quantum key distribution; Mode (computer interface); Intensity

The mode-pairing quantum key distribution (MP-QKD) protocol, which can achieve high rates over long distances without phase locking, is a potential candidate for implementing intercity QKD. However, achieving precise control of the light source intensity in field MP-QKD experiment an exceedingly challenging task. In this Letter, we study decoy-state protocol with fluctuations. Furthermore, propose statistical analysis method based on T-distribution to calculate confidence intervals Finally, experiments, considering fluctuations and finite size effect, obtain secure 1.03 × 10