Dr. Xue-Hua Wang is a Professor in Optics, School of Physics and Engineering, Sun Yat-Sen (Zhongshan) University, China. He got his PhD degree in 1995 at Shanghai Jiaotong University, China. He has long conducted researches on nano photonics, quantum optics and solid quantum chips, especially on controlling interaction between light and matter. He has made some significant achievements in these fields, including the universal position-dependent theoretical model for quantum light emission in nano structures, fabrication of highly-efficient on-demand controllable quantum light sources, and realization of the room-temperature quantum strong coupling of a single exciton with a single plasmonic nano particle. He has published more than 130 peer-reviewed papers on famous international journals, such as Nat. Nanotech., Phys. Rev. Lett., Nat. Commun., Sci. Adv., Light: Sci. & Appl., etc.
The generation of high-quality photon sources has been a long-sought goal in modern quantum communication and computation. The semiconductor quantum dot (QD) has been successfully demonstrated as a potentially scalable and on-chip integration technology to generate the triggered photon streams. However, the randomicity of the photon streams emitted from the QD seriously hinders the realization of highly-efficient on-demand controllable quantum light sources. In this talk, I will firstly present the strongly-entangled photon pair sources with high brightness and indistinguishability by combining GaAs QDs with new broadband photonic nanostructures: circular Bragg resonators on highly efficient broadband reflectors (CBR-HBR), which was praised as “an important milestone” in this field. Then, I will talk about the on-demand spin-state manipulation of single-photon emission from quantum dot integrated with metasurface, and the bright solid-state sources for single photons with orbital angular momentum.