| Autor: |
Cai, Tao, Dutta, Subhojit, Aghaeimeibodi, Shahriar, Yang, Zhili, Nah, Sanghee, Fourkas, John T., Waks, Edo |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Nano Lett. 2017, 17, 11, 6564-6568 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1021/acs.nanolett.7b02222 |
| Popis: |
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 (WSe2) 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 measure a coupling efficiency with a lower bound of 39% 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 2D semiconductors. |
| Databáze: |
arXiv |
| Externí odkaz: |
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