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Kim, Je-Hyung
Solid-State Quantum Architecture Lab.
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Radiative Enhancement of Single Quantum Emitters in WSe2 Monolayers Using Site-Controlled Metallic Nanopillars

Author(s)
Cai, TaoKim, Je-HyungYang, ZhiliDutta, SubhojitAghaeimeibodi, ShahriarWaks, Edo
Issued Date
2018-09
DOI
10.1021/acsphotonics.8b00580
URI
https://scholarworks.unist.ac.kr/handle/201301/24752
Fulltext
https://pubs.acs.org/doi/10.1021/acsphotonics.8b00580
Citation
ACS PHOTONICS, v.5, no.9, pp.3466 - 3471
Abstract
Plasmonic nanostructures provide an efficient way to control and enhance the radiative properties of quantum emitters. Coupling these structures to single defects in two-dimensional materials provides a particularly promising material platform to study emitter-plasmon interactions because these emitters are not embedded in a surrounding dielectric. They can therefore approach a near-field plasmonic mode to nanoscale distances, potentially enabling strong light-matter interactions. However, this coupling requires precise alignment of the emitters to the plasmonic mode of the structures, which is particularly difficult to achieve in a site-controlled structure. We present a technique to generate quantum emitters in two-dimensional tungsten diselenide coupled to site-controlled plasmonic nanopillars. The plasmonic nanopillar induces strains in the two-dimensional material which generate quantum emitters near the high-field region of the plasmonic mode. The electric field of the nanopillar mode is nearly parallel to the two-dimensional material and is therefore in the correct orientation to couple to the emitters. We demonstrate both an enhanced spontaneous emission rate and increased brightness of emitters coupled to the nanopillars. This approach may enable bright site-controlled nonclassical light sources for applications in quantum communication and optical quantum computing.
Publisher
AMER CHEMICAL SOC
ISSN
2330-4022
Keyword (Author)
quantum emitterssingle-defect emittersplasmonic nanopillarstwo-dimensional semiconductorstransition-metal dichalcogenideWSe2
Keyword
HEXAGONAL BORON-NITRIDEPHOTON EMISSIONDEFECTSSTATESLIGHTDOTSMONO

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