We designed and demonstrated experimentally a silicon photonics integrated dynamic polarization controller which is a crucial component of a continuous-variable quantum key distribution system. By using a variable step simulated annealing approach, we achieve a dynamic polarization extinction ratio greater than 25 dB. The dynamic polarization controller can be utilized in silicon photonics integrated continuous-variable quantum key distribution system to minimize the size and decrease the cost further.
@article{arxiv.2108.08428,
title = {Silicon photonics integrated dynamic polarization controller for continuous-variable quantum key distribution},
author = {Xuyang Wang and Yanxiang Jia and Xubo Guo and Jianqiang Liu and Shaofeng Wang and Wenyuan Liu and Fangyuan Sun and Jun Zou and Yongmin Li},
journal= {arXiv preprint arXiv:2108.08428},
year = {2024}
}