Study of Satellite Quantum Key Distribution System using Optisystem™

With the onset of Quantum Computers, the shift to a more secure Quantum Network has already begun. Satellite Quantum Key Distribution is one of the promising methods for secure key distribution in the future. In this paper, we bring forward a comparison between various modulation techniques such as Carrier Suppressed Return to Zero, Duo-Binary, Dual Polarized-Quadrature Phase Shift Keying, Dual Polarised-16 bit-Quadrature Amplitude Modulation and Continuous Wave on the basis of Quantum Bit Error Rate to find a suitable modulation technique for designing a setup of BB84 based Optical communication-operated LEO Satellite QKD using OptiSystem™ v 22.0.