Investigation of Quantum Antenna Process for Advanced Wireless Communication systems by implementing Quantum Key Distribution algorithms

The forthcoming age of communication systems requires increased security, faster processing, and simpler encryption techniques. Quantum information and communication technology offer a revolutionary era featuring high-speed and inherently secure networks. With the looming prospect of quantum supremacy, traditional encryption systems face potential obsolescence in terms of security. In response to this challenge, quantum key distribution (QKD) emerges as an innovative solution for exchanging secret keys in a quantum based manner, addressing the limitations of conventional encryption methods. Within the proposed work, the focus extends to the implementation of a MIMO- QKD scheme tailored for terahertz (THz) frequency applications. The paper provides a comprehensive examination of both single-antenna QKD schemes and the performance of the MIMO QKD scheme. Simulation results underscore the indispensability of multiple antennas to mitigate the substantial free-space path loss encountered at THz frequencies.