Optically-controlled single-qubit rotations in self-assembled InAs quantum dots

Details Optically-controlled single-qubit rotations in self-assembled InAs quantum dots Optically-controlled single-qubit rotations in self-assembled InAs quantum dots

2006-08-23

arxiv.org/abs/cond-mat/0608518v2

J. Phys.: Condens. Matter 19, 056203 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures; minor changes, J-ref added

Scientific paper

10.1088/0953-8984/19/5/056203

We present a theory of the optical control of the spin of an electron in an InAs quantum dot. We show how two Raman-detuned laser pulses can be used to obtain arbitrary single-qubit rotations via the excitation of an intermediate trion state. Our theory takes into account a finite in-plane hole $g$-factor and hole-mixing. We show that such rotations can be performed to high fidelities with pulses lasting a few tens of picoseconds.

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