论文标题
单光子纳米反顿纳纳，在HBN缺陷中心原位制造等离子Ag纳米颗粒
Single-Photon Nanoantenna with in Situ Fabrication of Plasmonic Ag Nanoparticle at an hBN Defect Center
论文作者
论文摘要
我们提出了一种实用的新方法，用于制造耦合的单量子发射极质量纳米ante纳纳系统。使用等离激元纳米antennas修改了固定在六角形硼（HBN）多层中的单个缺陷中心的发射特性。通过在HBN多层上侵蚀薄银膜，以一种尺寸控制的方式获得等离子纳米antennas，对缺陷没有不利影响。为了证明其发射特性的修改，研究了一个非常相同的单个缺陷中心。基于脱水过程中的初始银膜厚度，观察到按需增强和淬火效应。为了达到确定性耦合强度，根据实验采用电磁模拟模型。荧光寿命，辐射和非辐射发射速率计算用于估计缺陷 - 纳米annna系统的空间构型以及确认实验发现。我们的方法提供了一种低成本且简单的耦合方案，以替代扫描探针尖端天线技术。
We present a practical new method for fabricating a coupled single quantum emitter-plasmonic nanoantenna system. Emission characteristics of a single defect center embedded in hexagonal Boron Nitride (hBN) multilayers is modified using plasmonic nanoantennas. By dewetting thin silver films on hBN multilayers, plasmonic nanoantennas are obtained in a size controlled way with no adverse effects on the defects. A very same single defect center is investigated with and without nanoantenna in order to demonstrate the modification of its emission characteristics. Based on the initial silver film thickness in dewetting process, on-demand enhancement and quenching effects are observed. For attaining deterministic coupling strengths, an electromagnetic simulation model is employed in the light of experiments. Fluorescence lifetime, radiative and nonradiative emission rate calculations are used for estimating the spatial configuration of the defect-nanoantenna system as well as for confirming the experimental findings. Our approach provides a low-cost and uncomplicated coupling scheme as an alternative to the scanning probe tip antenna technique.
