Multi-Hop Quantum Key Distribution with Passive Relays over Underwater Turbulence Channels

Amir Hossein Fahim Raouf, Majid Safari, Murat Uysal
2020 2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)  
Absorption, scattering, and turbulence experienced in underwater channels severely limit the range of quantum communications. In this paper, to overcome range limitations, we investigate a multi-hop underwater quantum key distribution (QKD) where intermediate nodes help the key distribution between the source and destination nodes. We consider deployment of passive-relays which simply redirect the qubits to the next relay node or receiver without any measurement. Based on near-field analysis,
more » ... present the performance of relay-assisted QKD scheme in clear ocean under different atmospheric conditions. We further investigate the effect of system parameters (aperture size and detector field-of-view) on the achievable distance.
doi:10.1109/csndsp49049.2020.9249621 dblp:conf/csndsp/RaoufSU20 fatcat:m3r7jg65mrdw7pg2bohbj37yyi