We investigate the optical absorption and scattering properties of underwater media pertinent to our underwater free space quantum key distribution (QKD) channel model. With the vector radiative transfer theory and Monte Carlo method, we obtain the attenuation of photons, the fidelity of the scattered photons, the quantum bit error rate and the sifted key generation rate of underwater quantum communication. It can be observed from our simulations that the most secure single photon underwater free space QKD is feasible in the clearest ocean water.
@article{arxiv.1402.4666,
title = {Feasibility of underwater free space quantum key distribution},
author = {Peng Shi and Shi-Cheng Zhao and Wen-Dong Li and Yong-Jian Gu},
journal= {arXiv preprint arXiv:1402.4666},
year = {2017}
}