Abstract

Quantum key distribution (QKD) has undergone significant development in recent decades, particularly with respect to free-space (air) and optical fiber channels. Here, we report a proof-of-principle experiment for the BB84 protocol QKD over a water channel. First, we demonstrate again the polarization preservation properties of the water channel in optical transmission according to the measured Mueller matrix, which is close to the unit matrix. The reason for the polarization preservation, revealed by Monte Carlo simulation, is that almost all the received photons are unscattered. Then, we performed the first polarization encoding BB84 protocol QKD over a 2.37 m water channel. The results show that QKD can be performed with a low quantum bit error rate, less than 3.5%, with different attenuation coefficients.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Performance of underwater quantum key distribution with polarization encoding

Shi-Cheng Zhao, Xin-Hong Han, Ya Xiao, Yuan Shen, Yong-Jian Gu, and Wen-Dong Li
J. Opt. Soc. Am. A 36(5) 883-892 (2019)

Channel analysis for single photon underwater free space quantum key distribution

Peng Shi, Shi-Cheng Zhao, Yong-Jian Gu, and Wen-Dong Li
J. Opt. Soc. Am. A 32(3) 349-356 (2015)

Proof-of-principle demonstration of parametric down-conversion source-based quantum key distribution over 40 dB channel loss

Chun-Hui Zhang, Dong Wang, Xing-Yu Zhou, Shuang Wang, La-Bao Zhang, Zhen-Qiang Yin, Wei Chen, Zheng-Fu Han, Guang-Can Guo, and Qin Wang
Opt. Express 26(20) 25921-25933 (2018)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription