aiqbench analysis

This research establishes that BB84 quantum key distribution remains secure even with practical basis-dependent detector flaws and source imperfections, provided adversarial control is limited. By deriving a lower bound on secure key generation rates for weak coherent states, the work offers a critical theoretical foundation for engineers to deploy robust QKD systems without requiring idealized hardware. These findings effectively bridge the gap between theoretical security proofs and the constraints of real-world quantum communication infrastructure.