This publisher’s note contains a correction to Opt. Lett. 45, 4915 (2020) [CrossRef] .
© 2020 Optical Society of America
In Ref. , grant number for the National Key Research and Development Program of China was incorrect and should have been 2019YFB2203802. The Letter was corrected online on 3 September 2020.
1. Y. Liu, X. Huang, Z. Li, Y. Kuang, H. Guan, Q. Wei, Z. Fan, and Z. Li, Opt. Lett. 45, 4915 (2020). [CrossRef]