Superradiance from few emitters with non-radiative decay

TL;DR

This paper analyzes superradiance in a few quantum emitters considering non-radiative decay, calculating quantum efficiencies and identifying conditions for maximum enhancement, with potential for broader application including incoherent pumping and dephasing.

Contribution

It introduces a quantum state-based approach to quantify superradiance effects with non-radiative decay in few emitters, providing new insights into efficiency enhancements.

Findings

Maximum QE increase of 8% for two emitters

Maximum QE increase of 16% for three emitters

Efficiency peaks depend on ratios of non-radiative to radiative rates

Abstract

Description of superradiance of few quantum emitters with non-radiative decay in terms of quantum states is presented. Quantum efficiencies (QE) of SR of two and three emitters are calculated and compared with the case of two and three independent emitters. Maximum increase in QE is 8% for two emitters and 16% for three emitters, it is reached at certain ratios between non-radiative and radiative rates. Approach can be generalized with inclusion of the incoherent pump, dephasing and delay in emitter-emitter interaction.