[Announced by Harbin Institute of Technology, Shenzhen] (Fan Yubin Text/Photo) Professor Xiao Shumin's team from the School of Materials Science and Engineering of Harbin Institute of Technology, Shenzhen and Professor Song Qinghai's team from the School of Science have made two major breakthroughs in the field of information security and optical switch-super-structured surface encryption display technology and nanowire laser mode conversion mechanism. Recently, relevant research results have been published in the form of research papers in Nature Communications (impact factor: 12.353), a comprehensive sub-journal of Nature.

The first research paper, "Resonance-enhanced Three-photon Luminesce via Lead Halide Perovskite Metasurfaces for Optical Encoding", is dedicated to solving the problem of information security encryption, and it realizes optical encryption by designing a super-structured surface based on the nonlinear optical properties of perovskite. This research is the first application of nonlinear optics in the field of display and encryption. Harbin Institute of Technology, Shenzhen is the first completion unit and correspondent unit. Fan Yubin, a 2017 doctoral student and Wang Yuhan, a 2017 master's student in the School of Materials Science and Engineering, are co-first authors, and Xiao Shumin, Song Qinghai and Qiu Chengwei, a professor at the National University of Singapore, are co-correspondent authors. The second research paper "All-optical control of lead halide perovskite microlasers" realized the optical switching performance by studying the nonlinear interaction between modes for the first time, and provided a new device design scheme for all-optical integrated chips such as optical storage and ultrafast optical converter.

Paper links:

The first paper: https://doi.org/10.1038/s41467-019-09876-6
   The second paper:https://doi.org/10.1038/s41467-019-10090-7