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

C. Emary, L. J. Sham

Published 2006-08-23, updated 2007-03-22Version 2

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.