4 papers
Fractional optical skyrmions
Yuancong Cao, Ram Nandan Kumar, Hadrian Bezuidenhout +3
Optical topologies in the form of Skyrmions have attracted significant interest of late, where their integer Skyrmion number has been shown to be robust to complex media. Here we c…
Forbidden second harmonics in centrosymmetric bilayer crystals
Haoning Tang, Zhitong Ding, Tianyi Ruan +7
Optical spectroscopy based on second-order nonlinearity is a critical technique for characterizing two-dimensional (2D) crystals as well as bioimaging and quantum optics. It is gen…
Control of chirality and directionality of nonlinear metasurface light source via twisting
Huanyu Zhou, Xueqi Ni, Beicheng Lou +3
Metasurfaces have revolutionized nonlinear and quantum light manipulation in the past decade, enabling the design of materials that can tune polarization, frequency, and direction…
On-chip multi-degree-of-freedom control of two-dimensional quantum and nonlinear materials
Haoning Tang, Yiting Wang, Xueqi Ni +7
Two-dimensional materials (2DM) and their derived heterostructures have electrical and optical properties that are widely tunable via several approaches, most notably electrostatic…