Light emission properties in a double quantum dot molecule immersed in a cavity: phonon-assisted tunneling

Abstract

Two main mechanisms dictate the tunneling process in a double quantum dot: overlap of excited wave functions, effectively described as a tunneling rate, and phonon-assisted tunneling. In this paper, we study different regimes of tunneling that arise from the competition between these two mechanisms in a double quantum dot molecule immersed in a unimodal optical cavity. We show how such regimes affect the mean number of excitations in each quantum dot and in the cavity, the spectroscopic resolution and emission peaks of the photoluminescence spectrum, and the second-order coherence function which is an indicator of the quantumness of emitted light from the cavity.

submitted to physics letters A. 3 figures

References in corpus (5)

• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Robust states in semiconductor quantum dot molecules
• Probing electron-phonon interactions in the charge-photon dynamics of cavity-coupled double quantum dots
• A multiexcitonic quantum dot in an optical microcavity
• Phonon-assisted tunnelling in a double quantum dot molecule immersed in a cavity