Experimental Measurement-Device-Independent Quantum Key distribution with Flawed State-Preparation over 300 km
This work performed a Measurement-Device-Independent Quantum Key Distribution (MDI-QKD) experiment while accounting for state-preparation uncertainty (SPU) arising from encoding and intensity fluctuations. The experiment successfully achieved secure key distribution over 303.37 km, representing the farthest distance tested under these imperfect source conditions, demonstrating high practical security and performance.