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

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

2008-11-13

arxiv.org/abs/0811.2108v2

Phys. Rev. A 79, 042331 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Final extended version, 6 pages, 2 new figures

Scientific paper

10.1103/PhysRevA.79.042331

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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