Controllable Spin-Resolved Photon Emission Enhanced by Slow-Light Mode in Photonic Crystal Waveguides on Chip
Abstract
We report the slow-light enhanced spin-resolved in-plane emission from a single quantum dot (QD) in a photonic crystal waveguide (PCW). The slow light dispersions in PCWs are designed to match the emission wavelengths of single QDs. The resonance between two spin states emitted from a single QD and a slow light mode of a waveguide is investigated under a magnetic field with Faraday configuration. Two spin states of a single QD experience different degrees of enhancement as their emission wavelengths are shifted by combining diamagnetic and Zeeman effects with an optical excitation power control. A circular polarization degree up to 0.81 is achieved by changing the off-resonant excitation power. Strongly polarized photon emission enhanced by a slow light mode shows great potential to attain controllable spin-resolved photon sources for integrated optical quantum networks on chip.
Keywords
Cite
@article{arxiv.2302.11399,
title = {Controllable Spin-Resolved Photon Emission Enhanced by Slow-Light Mode in Photonic Crystal Waveguides on Chip},
author = {Shushu Shi and Shan Xiao and Jingnan Yang and Shulun Li and Xin Xie and Jianchen Dang and Longlong Yang and Danjie Dai and Bowen Fu and Sai Yan and Yu Yuan and Rui Zhu and Bei-Bei Li and Zhanchun Zuo and Can Wang and Haiqiao Ni and Zhichuan Niu and Kuijuan Jin and Qihuang Gong and Xiulai Xu},
journal= {arXiv preprint arXiv:2302.11399},
year = {2023}
}
Comments
7 pages,5 figures