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

• URL: http://arxiv.org/abs/2206.06514v1
• Date: Mon, 13 Jun 2022 22:57:01 GMT
• Title: Multi-Hop Quantum Key Distribution with Passive Relays over Underwater Turbulence Channels
• Authors: Amir Hossein Fahim Raouf, Majid Safari, Murat Uysal
• Abstract summary: In this paper, 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.
• Score: 23.85027363211704
• License: http://creativecommons.org/licenses/by/4.0/
• 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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