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arXiv · 0811.2108

Indirect spin dephasing via charge state decoherence in optical control schemes in quantum dots

A. Grodecka·P. Machnikowski·J. Förstner
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Abstract

We demonstrate that an optically driven spin of a carrier in a quantum dot undergoes indirect dephasing via conditional optically induced charge evolution even in the absence of any direct interaction between the spin and its environment. A generic model for the indirect dephasing with a three-component system with spin, charge, and reservoir is proposed. This indirect decoherence channel is studied for the optical spin manipulation in a quantum dot with a microscopic description of the charge-phonon interaction taking into account its non-Markovian nature.

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A. Grodecka, P. Machnikowski, J. Förstner. 2009-04-27. Indirect spin dephasing via charge state decoherence in optical control schemes in quantum dots. https://doi.org/10.1103/physreva.79.042331

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