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arXiv · 2206.06514

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

Amir Hossein Fahim Raouf·Majid Safari·Murat Uysal
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Abstract

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, we 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.

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Amir Hossein Fahim Raouf, Majid Safari, Murat Uysal. 2022-06-13. Multi-Hop Quantum Key Distribution with Passive Relays over Underwater Turbulence Channels. https://doi.org/10.1109/csndsp49049.2020.9249621

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