每秒1亿光子来自单个有机分子

中文摘要 AI 辅助

在低温下，有机单光子源（SPSs）提供傅里叶极限发射、几乎无限的光稳定性以及可通过分子设计选择的发射波长，使其在量子计量、安全通信和光子量子信息处理中具有吸引力。然而，它们与光子微结构的高效集成仍然具有挑战性，限制了低温操作下单个有机发射体的光子收集。在这里，我们展示了一种低温平面金属-介电天线，它能高效地将单个二苯并三联苯（DBT）分子的发射导向收集光学系统。该器件达到97%的收集效率，并向第一个透镜输送每秒1亿个光子。我们测量了傅里叶极限跃迁的光子不可区分性为91.2%，同时在强连续波（CW）和脉冲激发下保持了97.7%的高单光子纯度。这些结果确立了有机分子作为单光子生成的高性能平台，并代表了向可扩展有机量子光子技术迈出的重要一步。

英文摘要

At cryogenic temperatures, organic single-photon sources (SPSs) offer Fourier-limited emission, virtually unlimited photostability, and emission wavelengths selectable by molecular design, making them attractive for quantum metrology, secure communication, and photonic quantum information processing. However, their efficient integration with photonic microstructures has remained challenging, limiting photon collection from single organic emitters under cryogenic operation. Here, we demonstrate a cryogenic planar metallo-dielectric antenna that efficiently directs the emission of a single dibenzoterrylene (DBT) molecule towards the collection optics. The device reaches a collection efficiency of 97% and delivers 100 million photons per second into the first lens. We measure a photon indistinguishability for the Fourier-limited transition of 91.2% while maintaining a high single-photon purity of 97.7% under strong continuous-wave (CW) and pulsed excitation. These results establish organic molecules as a high-performance platform for single-photon generation and represent an important step towards scalable organic quantum photonic technologies.

发表机构

• Max Planck Institute for the Science of Light（马克斯·普朗克光科学研究所）
• Friedrich Alexander University Erlangen-Nuremberg（弗里德里希·艾伯特埃尔朗根-纽伦堡大学）

机构由 AI 辅助整理，请以论文原文为准。