Single ion spins in semiconductors with sizable spin-orbit interaction can be optically or electrically manipulated.
The highly extended anisotropic wave function of the hole bound to each magnetic ion is susceptible to external
non-magnetic control fields. The spin-orbit coupling between the orbital and spin character of the hole permits
indirect manipulation and readout of the ionic spin state. The spin-spin interaction between the magnetic ions
is electrically or structurally controllable.
In systems with sizable spin-orbit interaction intense optical illumination or an electric field can generate an
effective "pseudomagnetic field" which replaces a true applied magnetic field for the efficient and rapid manipulation
of spins. The theoretical characteristics of optically-induced spin precession in self-assembled quantum
dots will be described, along with the potential for manipulating spins bound to donors and acceptors with