Numerical optimization of the extraction efficiency of a quantum-dot based single-photon emitter into a single-mode fiber

TL;DR

This paper introduces a numerical approach to optimize and analyze the photon extraction efficiency of quantum-dot single-photon emitters embedded in micro-optical structures, considering fabrication imperfections.

Contribution

The paper develops a new numerical method for simulating localized light sources in dielectric structures and applies it to optimize quantum-dot emitter efficiency.

Findings

Optimized photon extraction efficiency in quantum-dot emitters.

Method to assess robustness against fabrication errors.

Enhanced design strategies for micro-optical structures.

Abstract

We present a numerical method for the accurate and efficient simulation of strongly localized light sources, such as quantum dots, embedded in dielectric micro-optical structures. We apply the method in order to optimize the photon extraction efficiency of a single-photon emitter consisting of a quantum dot embedded into a multi-layer stack with further lateral structures. Furthermore, we present methods to study the robustness of the extraction efficiency with respect to fabrication errors and defects.