论文标题
使用六角硼硝酸盐皱纹的单WSE $ _2 $量子发射器的光谱和空间隔离
Spectral and spatial isolation of single WSe$_2$ quantum emitters using hexagonal boron nitride wrinkles
论文作者
论文摘要
单层WSE $ _2 $主机亮单光子发射器。由于其合规性，单层WSE $ _2 $符合图案化的底物而不会破裂，从而为大型局部菌株带来了潜力，这是其内在量子发射器的一种激活机制。在这里，我们报告了一种从WSE $ _2 $单层中创建空间和频谱隔离的量子发射器的方法，该量子很少或没有有害的排放来源。我们表明，放置在纳米结构的底物上的六角硼（HBN）和WSE $ _2 $的双层可以使用与WSE $ _2 $传达局部菌株的皱纹，从而创建与substrate特征隔离的量子发射器。我们比较直接在底物特征顶部创建的量子发射器，并沿着皱纹形成量子发射器，发现后者的光谱主要由单个峰和低背景荧光组成。我们还讨论了沿HBN皱纹控制发射极位置的可能方法。
Monolayer WSe$_2$ hosts bright single-photon emitters. Because of its compliance, monolayer WSe$_2$ conforms to patterned substrates without breaking, thus creating the potential for large local strain, which is one activation mechanism of its intrinsic quantum emitters. Here, we report an approach to creating spatially and spectrally isolated quantum emitters from WSe$_2$ monolayers with few or no detrimental sources of emission. We show that a bilayer of hexagonal boron nitride (hBN) and WSe$_2$ placed on a nanostructured substrate can be used to create and shape wrinkles that communicate local strain to the WSe$_2$, thus creating quantum emitters that are isolated from substrate features. We compare quantum emitters created directly on top of substrate features with quantum emitters forming along wrinkles and find that the spectra of the latter consist of mainly a single peak and a low background fluorescence. We also discuss possible approaches to controlling emitter position along hBN wrinkles.
