论文标题
波导耦合原子的集体激发和衰减：从定时的dicke状态到倒置的合奏
Collective excitation and decay of waveguide-coupled atoms: from timed Dicke states to inverted ensembles
论文作者
论文摘要
原子整体对光的集体吸收和发射是许多基本量子光学效应的核心，也是众多应用的基础。但是，除了激发弱之外，实验和理论都变得越来越具有挑战性。在这里，我们探索了从弱激发到反转的制度，最多可使用围绕光学纳米纤维的evanevanscent磁场捕获和光学接触的一千个原子。我们意识到强烈的反转，大约80％的原子被兴奋，并研究了它们随后的辐射衰减到指导模式中。数据通过一个简单的模型很好地描述，该模型假定引导光与原子的级联相互作用。我们的结果有助于对光与物质的集体相互作用的基本理解，并且与从量子记忆到非经典光源到光学频率标准的应用相关。
The collective absorption and emission of light by an ensemble of atoms is at the heart of many fundamental quantum optical effects and the basis for numerous applications. However, beyond weak excitation, both experiment and theory become increasingly challenging. Here, we explore the regimes from weak excitation to inversion with ensembles of up to one thousand atoms that are trapped and optically interfaced using the evanescent field surrounding an optical nanofiber. We realize strong inversion, with about 80% of the atoms being excited, and study their subsequent radiative decay into the guided modes. The data is very well described by a simple model that assumes a cascaded interaction of the guided light with the atoms. Our results contribute to the fundamental understanding of the collective interaction of light and matter and are relevant for applications ranging from quantum memories to sources of nonclassical light to optical frequency standards.
