Variable optical attenuators (VOAs) can adjust the optical power reaching each photodiode, compensating for the differences in quantum efficiencies and restoring balance in the homodyne detection process [Kong2022].

Literature

[Kong2022]	L. Kong, W. Liu, F. Jing, and C. He. "Practical security analysis of continuousvariable quantum key distribution with an unbalanced heterodyne detector" In: Chinese Phys. B 31, 070303. (2022) 10.1088/1674-1056/ac4102.

QID: CM-0099

Tier: T0

Type: Quantum

Tactic: Harden

Created: 2024-08-19

Updated: 2024-08-19