2017/06/05 by Tao Cai, Subhojit Dutta, Shahriar Aghaeimeibodi +4 · 3 citations
Chemistry · Engineering · Physics and Astronomy · #Chemistry #Coupling (piping) #Localized surface plasmon #Materials science #Mechanical and Optical Resonators #Monolayer #Nanotechnology #Nanowire #Optoelectronics #Photonic and Optical Devices #Plasmon #Plasmonic and Surface Plasmon Research #Semiconductor #Surface plasmon #Surface plasmon polariton #Transition metal #Tungsten diselenide #cond-mat.mes-hall #physics.optics #quant-ph
paper · pdf · doi:10.1021/acs.nanolett.7b02222
published as Nano Lett. 2017, 17, 11, 6564-6568
arxiv created 2017/06/05 · openalex publication_date 2017/10/02 · arxiv updated 2018/10/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Coupling of an atom-like emitter to surface plasmons provides a path toward significant optical nonlinearity, which is essential in quantum information processing and quantum networks. A large coupling strength requires nanometer-scale positioning accuracy of the emitter near the surface of the plasmonic structure, which is challenging. We demonstrate the coupling of single localized defects in a tungsten diselenide (WSe 2 ) monolayer self-aligned to the surface plasmon mode of a silver nanowire. The silver nanowire induces a strain gradient on the monolayer at the overlapping area, leading to the formation of localized defect emission sites that are intrinsically close to the surface plasmon. We measured an average coupling efficiency with a lower bound of 26% ± 11% from the emitter into the plasmonic mode of the silver nanowire. This technique offers a way to achieve efficient coupling between plasmonic structures and localized defects of two-dimensional semiconductors.