标题： 弱耦合 regime 中的等离激元纳米腔：增强与损耗的分离 显示英文标题

标题： Separating enhancement from loss: plasmonic nanocavities in the weak coupling regime

摘要： 通过在发射器位置修改态密度，弱腔-发射器耦合可以在量子光学中启用一系列潜在应用，从低阈值激光器的开发到用于量子密码学的更亮单光子源。 尽管一些早期的自发发射修改演示发生在金属结构中，但直到最近在介电光学腔中演示了腔量子电动力学效应后，基于金属的光学腔才被考虑用于量子光学应用。 基于金属的光学腔的优势包括它们与各种发射器的兼容性以及其宽带腔谱，这使得光谱宽的发射器得到增强。 在这里，我们展示了一种基于金属的纳米腔结构，实现了辐射发射速率增强1000倍，这为使用固有宽光学发射器（包括有机染料和胶体量子点）进行腔电动力学研究提供了可能性。 显示英文摘要

摘要： By modifying the density of optical states at the location of an emitter, weak cavity-emitter coupling can enable a host of potential applications in quantum optics, from the development of low- threshold lasers to brighter single-photon sources for quantum cryptography. Although some of the first demonstrations of spontaneous emission modification occurred in metallic structures, it was only after the recent demonstration of cavity quantum electrodynamics effects in dielectric optical cavities that metal-based optical cavities were considered for quantum optics applications. Advantages of metal-optical cavities include their compatibility with a large variety of emitters and their broadband cavity spectra, which enable enhancement of spectrally-broad emitters. Here, we demonstrate a metal- based nanocavity structure that achieves radiative emission rate enhancements of 1000, opening up the possibility of pursuing cavity electrodynamics investigations with intrinsically broad optical emitters, including organic dyes and colloidal quantum dots.