Author
Raouf, Amir Hossein Fahim, Safari, M., Uysal, Murat
Publication Date
2020
Publication Place
-
The Optical Society
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0740-3224
Record ID
09fa50a2-9865-408d-ac5c-55051f3e178c
Library Location
Electrical & Electronics Engineering
Date
2020
Notes
TÜBİTAK
Sample Text
The current literature on quantum key distribution is limited mainly to transmissions over fiber optic, atmospheric, or satellite links and is not directly applicable to underwater environments with different channel characteristics. In this paper, we analyze the quantum bit error rate (QBER) and secret key rate (SKR) performance of the well-known BB84 protocol in underwater channels. As a path loss model, we consider a modified version of the Beer-Lambert formula, which takes into account the effect of scattering. We derive a closed-form expression for the wave structure function to determine the average power transfer over a turbulent underwater path and use this to obtain an upper bound on QBER as well as a lower bound on SKR. Based on the derived bounds, we present the performance of the BB84 protocol in different water types including dear, coastal, and turbid and under different atmospheric conditions such as clear, hazy, and overcast. We further investigate the effect of system parameters such as aperture size and detector field of view on QBER and SKR performance metrics.
DOI
10.1364/JOSAB.376267
Cilt
37
