在单层 WS2 中发射窄带可见光谱范围的纳米粒子应力诱导单光子源

IF 4.5 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Jithin T Surendran, Yunus Waheed, Sumitra Shit, Indrajeet D Prasad, Kenji Watanabe, Takashi Taniguchi and Santosh Kumar
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引用次数: 0

摘要

范德瓦耳斯异质结构含有原子薄的单层(ML)过渡金属二掺杂物作为单光子发射层,正在成为一种引人入胜的固态量子光子平台。在这里,我们报告了利用二氧化硅纳米粒子的自旋涂层在 ML-WS2 中半确定性地产生光谱隔离、能量稳定和窄线宽的单光子发射器。我们还证明,在真空中对光子异质结构进行长时间低温退火,可以消除因制造相关残留物而存在的能量不稳定发射体,从而在以 ~620 nm 为中心的 25 nm 窄带可见光谱范围内发射单光子。这项工作可能会为实现混合量子光子平台铺平道路,该平台包含范德华异质结构/器件和在同一可见光谱范围内发射/吸收的原子蒸气系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nanoparticle stressor-induced single-photon sources in monolayer WS2 emitting into a narrowband visible spectral range
A van der Waals heterostructure containing an atomically thin monolayer (ML) transition-metal dichalcogenide as a single-photon emitting layer is emerging as an intriguing solid-state quantum-photonic platform. Here, we report the utilization of spin-coating of silica nanoparticles for semi-deterministically creating the spectrally isolated, energetically stable, and narrow-linewidth single-photon emitters in ML-WS2. We also demonstrate that long-duration low-temperature annealing of the photonic heterostructure in the vacuum removes the energetically unstable emitters that are present due to fabrication-associated residue and lead to the emission of single-photons in a 25 nm narrowband visible spectral range centered at ~620 nm. This work may pave the way toward realizing a hybrid-quantum-photonic platform containing a van der Waals heterostructure/device and an atomic-vapor system emitting/absorbing in the same visible spectral range.
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来源期刊
2D Materials
2D Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
10.70
自引率
5.50%
发文量
138
审稿时长
1.5 months
期刊介绍: 2D Materials is a multidisciplinary, electronic-only journal devoted to publishing fundamental and applied research of the highest quality and impact covering all aspects of graphene and related two-dimensional materials.
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