Hexagonal boron nitride (hBN) is a remarkable two-dimensional (2D) material that hosts solid-state spins and has great potential to be used in quantum information applications, including quantum networks. However, in this application, both the optical and spin properties are crucial for single spins but have not yet been discovered simultaneously for hBN spins. Here, we realize an efficient method for arraying and isolating the single defects of hBN and use this method to discover a new spin defect with a high probability of 85%. This single defect exhibits outstanding optical properties and an optically controllable spin, as indicated by the observed significant Rabi oscillation and Hahn echo experiments at room temperature. First principles calculations indicate that complexes of carbon and oxygen dopants may be the origin of the single spin defects. This provides a possibility for further addressing spins that can be optically controlled.
@article{arxiv.2112.06191,
title = {Coherent control of an ultrabright single spin in hexagonal boron nitride at room temperature},
author = {Nai-Jie Guo and Song Li and Wei Liu and Yuan-Ze Yang and Xiao-Dong Zeng and Shang Yu and Yu Meng and Zhi-Peng Li and Zhao-An Wang and Lin-Ke Xie and Rong-Chun Ge and Jun-Feng Wang and Qiang Li and Jin-Shi Xu and Yi-Tao Wang and Jian-Shun Tang and Adam Gali and Chuan-Feng Li and Guang-Can Guo},
journal= {arXiv preprint arXiv:2112.06191},
year = {2023}
}