Reducing dephasing in coupled quantum dot-cavity systems by engineering the carrier wavefunctions

A. Nysteen; P. Kaer; J. Mørk

doi:10.1117/12.905594

23 February 2012 Reducing dephasing in coupled quantum dot-cavity systems by engineering the carrier wavefunctions

A. Nysteen, P. Kaer, J. Mørk

Proceedings Volume 8271, Quantum Dots and Nanostructures: Synthesis, Characterization, and Modeling IX; 82710E (2012) https://doi.org/10.1117/12.905594
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

We demonstrate theoretically how photon-assisted dephasing by the electron-phonon interaction in a coupled cavity-quantum dot system can be significantly reduced for specific QD-cavity detunings. Our starting point is a recently published theory,¹ which considers longitudinal acoustic phonons, described by a non-Markovian model, interacting with a coupled quantum dot-cavity system. The reduction of phonon-induced dephasing is obtained by placing the cavity-quantum dot system inside an infinite slab, assuming spherical electronic wavefunctions. Based on our calculations, we expect this to have important implications in single-photon sources, allowing the indistinguishability of the photons to be improved.

Citation Download Citation

A. Nysteen, P. Kaer, and J. Mørk "Reducing dephasing in coupled quantum dot-cavity systems by engineering the carrier wavefunctions", Proc. SPIE 8271, Quantum Dots and Nanostructures: Synthesis, Characterization, and Modeling IX, 82710E (23 February 2012); https://doi.org/10.1117/12.905594

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