Quantum Key Distribution for Visible Light Communications: A Review.

Visible light communication (VLC) is a promising technology to improve the capacity of the existing indoor wireless communication systems. However, VLC also comes with security concerns in line with other wireless and wired transmission systems. In this regard, quantum key distribution (QKD) has been proposed as an optimal solution to enhance the security of VLC networks at the physical layer. This paper serves as a review study of the QKD and highlights its state-of-the-art, applications and challenges in the prospect of securing the VLC systems.