研究人员利用嵌入在纳米光子波导中的一对固态光量子发射器实现了远距离偶极-偶极辐射耦合。该团队动态探测集体响应，识别超辐射和亚辐射发射，以及通过适当的激发技术控制动力学。他们的工作构成了向可扩展量子信息处理的多发射体应用迈出的基础一步。
据介绍，光子发射是光物质相互作用的标志，是光子量子科学的基础，为量子通信和计算提供了先进的技术。虽然单发射器辐射可以由光子环境定制，但多个发射器的引入扩展了这一图景。然而，一个基本的挑战是，辐射偶极-偶极耦合随着空间分离而迅速衰减，通常在光学波长的一小部分内。
附：英文原文
Title: Collective super- and subradiant dynamics between distant optical quantum emitters
Author: Alexey Tiranov, Vasiliki Angelopoulou, Cornelis Jacobus van Diepen, Bjrn Schrinski, Oliver August Dall’Alba Sandberg, Ying Wang, Leonardo Midolo, Sven Scholz, Andreas Dirk Wieck, Arne Ludwig, Anders Sndberg Srensen, Peter Lodahl
Issue&Volume: 2023-01-27
Abstract: Photon emission is the hallmark of light-matter interaction and the foundation of photonic quantum science, enabling advanced sources for quantum communication and computing. Although single-emitter radiation can be tailored by the photonic environment, the introduction of multiple emitters extends this picture. A fundamental challenge, however, is that the radiative dipole-dipole coupling rapidly decays with spatial separation, typically within a fraction of the optical wavelength. We realize distant dipole-dipole radiative coupling with pairs of solid-state optical quantum emitters embedded in a nanophotonic waveguide. We dynamically probe the collective response and identify both super- and subradiant emission as well as means to control the dynamics by proper excitation techniques. Our work constitutes a foundational step toward multiemitter applications for scalable quantum-information processing.
DOI: ade9324
Source: https://www.science.org/doi/10.1126/science.ade9324