论文标题
单个分子在光子黑匣子中的相干表征
Coherent characterisation of a single molecule in a photonic black box
论文作者
论文摘要
灭绝光谱是一种强大的工具，用于证明单个量子发射极与光子结构的耦合。但是，除了最简单的几何形状以外，从测量频谱中推断出耦合效率的准确值可能是具有挑战性的。在这里，我们开发了一个理论框架，以从测量的传输和反射光谱中推断出耦合效率，而无需精确了解光子环境。然后，我们考虑由放置发射极的横向切割中断的波导的情况。我们将该理论应用于氮化硅波导，该硅被充满蒽的缝隙中断的硅波导中断。我们描述了这些设备的制造，并通过实验表征了间隙中单个分子的波导耦合。
Extinction spectroscopy is a powerful tool for demonstrating the coupling of a single quantum emitter to a photonic structure. However, it can be challenging in all but the simplest of geometries to deduce an accurate value of the coupling efficiency from the measured spectrum. Here we develop a theoretical framework to deduce the coupling efficiency from the measured transmission and reflection spectra without precise knowledge of the photonic environment. We then consider the case of a waveguide interrupted by a transverse cut in which an emitter is placed. We apply that theory to a silicon nitride waveguide interrupted by a gap filled with anthracene that is doped with dibenzoterrylene molecules. We describe the fabrication of these devices, and experimentally characterise the waveguide coupling of a single molecule in the gap.
