Phonon-assisted tunnelling in a double quantum dot molecule immersed in a cavity
Abstract
The effects caused by phonon-assisted tunnelling (PhAT) in a double quantum dot (QD) molecule immersed in a cavity were studied under the quantum Markovian master equation formalism in order to account for dissipation phenomena. We explain how for higher PhAT rates, a stronger interaction between a QD and the cavity at off-resonance takes place through the resonant interaction of another QD and the cavity, where the QDs interact through tunnelling. A closer look at the system's allowed optical transitions as a function of PhAT rates showed coalescence of the transition energies, leading to a loss of spectroscopic resolution in the photoluminescence (PL) spectrum. This coalescence occurs at several exceptional points, suggesting a quantum dynamical phase transition.
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Cite
@article{arxiv.1902.05580,
title = {Phonon-assisted tunnelling in a double quantum dot molecule immersed in a cavity},
author = {Vladimir Vargas-Calderón and Herbert Vinck-Posada},
journal= {arXiv preprint arXiv:1902.05580},
year = {2019}
}
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Manuscript version