Phonon effects on the radiative recombination of excitons in double quantum dots

Abstract

We study theoretically the radiative recombination of excitons in double quantum dots in the presence of carrier-phonon coupling. We show that the phonon-induced pure dephasing effects and transitions between the exciton states strongly modify the spontaneous emission process and make it sensitive to temperature, which may lead to non-monotonic temperature dependence of the time-resolved luminescence. We show also that under specific resonance conditions the biexcitonic interband polarization can be coherently transferred to the excitonic one, leading to an extended life time of the total coherent polarization, which is reflected in the nonlinear optical spectrum of the system. We study the stability of this effect against phonon-induced decoherence.

arXiv comment10 pages, 7 figures

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Cited by in corpus (5)

• Vacuum-induced coherence in quantum dot systems
• Using quantum state protection via dissipation in a quantum-dot molecule to solve the Deutsch problem
• Decay and persistence of spatial coherence during phonon-assisted relaxation in double quantum dots
• Phonon-assisted tunnelling in a double quantum dot molecule immersed in a cavity
• Light emission properties in a double quantum dot molecule immersed in a cavity: phonon-assisted tunneling