Fast high fidelity hole spin initialization in a single InGaAs quantum dot

Details Fast high fidelity hole spin initialization in a single InGaAs quantum dot Fast high fidelity hole spin initialization in a single InGaAs quantum dot

2010-06-30

arxiv.org/abs/1006.5842v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We demonstrate fast initialization of a single hole spin captured in an
InGaAs quantum dot with a fidelity F>99% by applying a magnetic field parallel
to the growth direction. We show that the fidelity of the hole spin, prepared
by ionization of a photo-generated electron-hole pair, is limited by the
precession of the exciton spin due to the anisotropic exchange interaction.

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