Key components for nano-assembled plasmon-excited single molecule non-linear devices

TL;DR

This paper presents the development of key components and technologies for a plasmon-excited single molecule non-linear device, enabling enhanced light-matter interactions for potential quantum applications.

Contribution

It introduces lithographically fabricated plasmonic waveguides and a nano-assembling technique for controlled coupling of single organic emitters, advancing the construction of non-linear quantum devices.

Findings

Successful fabrication of on-chip plasmonic waveguides

Development of nano-assembling technology for single molecule coupling

Demonstration of key components for non-linear single molecule devices

Abstract

Tremendous enhancement of light-matter interaction in plasmon-excited molecular hybrid devices allows for non-linearities on the level of single emitters and few photons. This promises a plethora of novel applications like single photon transistors. Nevertheless, building the components of such devices is technologically extremely challenging. We tackle this task by lithographically fabricating on-chip plasmonic waveguides, efficiently connected to far-field in- and out-coupling ports via low-loss dielectric waveguides. Furthermore, a nano-assembling technology is developed, enabling the controlled coupling of single organic emitters to the plasmonic waveguides. Dibenzoterrylene fluorescent molecules hosted in anthracene crystals are investigated for this purpose. Here we present all key-components and technologies for a plasmon-excited single molecule non-linear device.