| Saturation attack of the microwave-propagated continuous variable quantum key distribution in open air
System
- Wenqi Peng, Xuan Li, Yongxin Feng, Xiu-Bo Chen, Ying Guo
- 2026
Abstract
<p>This work extends the saturation attack from optical to microwave-propagated continuous-variable QKD in open air. It compares two attack schemes, one based on displacement control alone and the other on joint displacement and gain control, finds that the joint scheme preserves a normal transmittance estimate within its feasible loss regime, and proposes a countermeasure based on the quantum k nearest neighbour algorithm. Antenna gain is found to drive both the secret key rate and the maximum transmission distance.</p>
Identifier:
Peng2026
Type:
Journal Article
Year:
2026
Techniques
2