  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-polarised 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 a InGaAs dot, we calculate a Rabi
frequency of 2 GHz.
