Characterization of an underwater channel for quantum communications in the Ottawa River

Abstract

We examine the propagation of optical beams possessing different polarization states and spatial modes through the Ottawa River in Canada. A Shack-Hartmann wavefront sensor is used to record the distorted beam's wavefront. The turbulence in the underwater channel is analysed, and associated Zernike coefficients are obtained in real-time. Finally, we explore the feasibility of transmitting polarization states as well as spatial modes through the underwater channel for applications in quantum cryptography.

arXiv comment5 pages, 4 figures. Comments welcome

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Cited by in corpus (7)

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• Decoy-State Quantum Key Distribution over a Long-Distance High-Loss Underwater Free-Space Channel
• Mitigating the effect of atmospheric turbulence on orbital angular momentum-based quantum key distribution using real-time adaptive optics with phase unwrapping
• High-dimensional Encoding in the Round-Robin Differential-Phase-Shift Protocol
• On the Optimization of Underwater Quantum Key Distribution Systems with Time-Gated SPADs
• Multi-Hop Quantum Key Distribution with Passive Relays over Underwater Turbulence Channels
• Experimental Demonstration of Underwater Decoy-state Quantum Key Distribution with All-optical Transmission