6 papers
Real-Space Imaging of Guided Exciton Polaritons in Free-standing Monolayer WSe2
Manuka Suriyage, Hao Qin, Xueqian Sun +5
Monolayers of transition metal dichalcogenides (TMDCs), known for their strong excitonic states with high binding energies in the visible spectrum at room temperature, offer great…
Counter-propagating Entangled Photon Pairs from a Monolayer
Zhuoyuan Lu, Jiri Janousek, Syed M. Assad +9
Non-phase-matched spontaneous parametric down-conversion (SPDC) in atomically thin materials provides new degrees of freedom and enhanced quantum information capacity compared to c…
Enhanced photon-pair generation from a van der Waals metasurface
Tongmiao Fan, Yilin Tang, Shaun Lung +11
Quantum photon pairs play a pivotal role in many quantum applications. Metasurfaces, two-dimensional arrays of nanostructures, have been studied intensively to enhance and control…
Giant Second Harmonic Generation from 3R-MoS Metasurfaces
Yilin Tang, Hao Qin, Domenico de Ceglia +10
Metasurfaces have long served as a cornerstone technique to enhance nonlinear processes, enabling frequency conversion, efficient light manipulation and integrated photonic devices…
Optical Visualization of Carrier Surfing in 2D Monolayers Driven by Surface Acoustic Waves
Xueqian Sun, Shuyao Qiu, Hao Qin +1
Charge carrier transport is pivotal in advancing nanoelectronics. Despite progress in exciton transport within ultra-thin semiconductors, the intertwined transport of free carriers…
Nonlinear chiral metasurfaces based on structured van der Waals materials
Pavel Tonkaev, Ivan Toftul, Zhuoyuan Lu +6
Nonlinear chiral photonics explores nonlinear response of chiral structures, and it offers a pathway to novel optical functionalities not accessible through linear or achiral syste…