Speaker
Description
Talk: Nonlinear Optical Properties of 2D Quantum Materials by Steve Smith, SD Mines
The Quantum Materials Institute is focused on discovery of novel 2D materials, heterostructures and metasurfaces to achieve compact systems with enhanced second-order nonlinear processes, including second harmonic generation (SHG) and spontaneous parametric downconversion (SPDC), important processes for generating quantum light and implementing quantum communications networks. The institute includes expertise in synthesis, assembly, optical characterization and computational modeling. In concert, self-assembled plasmonic meta-surfaces and their chiral assembly are being developed. We use spatially- and spectrally-resolved, polarization-resolved multi-photon excitation microscopy to observe the effects of stacking, strain, and twist angle in single and few-layer 2D materials including WSe2, In2Se3 and Benzylammonium Perovskites based on I, Br, and Cl. In partnership with MonArk Quantum Foundry, heterostructures of transition metal dichalcogenides have been designed and fabricated, allowing the effects of transverse electric fields to be investigated. In addition, the infrastructure established by the institute, their capabilities and early demonstrations will be discussed.
Lab Tours following talk