Nanoantenna enhanced radiative and anisotropic decay rates in monolayer-quantum dots

TL;DR

This paper presents a scalable self-assembly lithography method to create gold nanorod antennas on quantum dot monolayers, enhancing emission rates for quantum communication applications.

Contribution

It introduces a novel scalable fabrication technique for hybrid nanoantenna-quantum dot systems with demonstrated decay rate enhancements.

Findings

Resonant and off-resonant gold nanorods enhance radiative decay.

Simulations elucidate decay mechanisms and antenna effects.

Potential applications in quantum displays and communication devices.

Abstract

Nanoantenna enhanced ultrafast emission from colloidal quantum dots as quantum emitters is required for fast quantum communications. On chip integration of such devices require a scalable and high throughput technology. We report self-assembly lithography technique of preparing hybrid of gold-nanorods antenna over a com- pact CdSe quantum dot monolayer. We demonstrate resonant and off resonant gold nanorod antenna enhanced radiative and anisotropic decay. Extensive simulations explain the mechanism of the decay rates and the role of antenna in both random and a compact monolayer of quantum dots. The study could find applications in quantum dots display and quantum communications devices.