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arXiv · 1905.09437

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

Felix Hufnagel·Alicia Sit·Florence Grenapin·Frédéric Bouchard·Khabat Heshami·Duncan England·Yingwen Zhang·Benjamin J. Sussman·Robert W. Boyd·Gerd Leuchs·Ebrahim Karimi
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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.

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Felix Hufnagel, Alicia Sit, Florence Grenapin, Frédéric Bouchard, Khabat Heshami, Duncan England, Yingwen Zhang, Benjamin J. Sussman, Robert W. Boyd, Gerd Leuchs, Ebrahim Karimi. 2019-05-23. Characterization of an underwater channel for quantum communications in the Ottawa River. https://doi.org/10.1364/oe.27.026346

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