Spin-orbit-driven coherent oscillations in a few-electron quantum dot

Phys Rev Lett. 2005 Jun 10;94(22):226803. doi: 10.1103/PhysRevLett.94.226803. Epub 2005 Jun 8.


We propose an experiment to observe coherent oscillations in a single quantum dot with the oscillations driven by spin-orbit interaction. This is achieved without spin-polarized leads, and relies on changing the strength of the spin-orbit coupling via an applied gate pulse. We derive an effective model of this system which is formally equivalent to the Jaynes-Cummings model of quantum optics. For parameters relevant to an InGaAs dot, we calculate a Rabi frequency of 2 GHz.