R. Kumar and T. Spiller, “Feasibility of higher key rate continuous variable quantum key distribution with multi-mode signals,” 2020 22nd International Conference on Transparent Optical Networks (ICTON), Bari, Italy, 2020, pp. 1-4, doi: 10.1109/ICTON51198.2020.9203028.
This paper examines the feasibility of multi-mode Gaussian modulated continuous variable quantum key distribution (CV-QKD) systems for higher rate secure key generation at longer distances. We consider different multi-mode transmission scenarios and propose a feasible experimental set-up for a previously proposed multi-mode CV-QKD system with joint quadrature measurement . We compare signal to noise ratios (SNR) of multi-mode schemes and show many fold improvements in the joint quadrature detection based CV-QKD system.