Creating excitonic entanglement in quantum dots through the optical   Stark effect
  We show that two initially non-resonant quantum dots may be brought into resonance by the application of a single detuned laser. This allows for control of the inter-dot interactions and the generation of highly entangled excitonic states on the picosecond timescale. Along with arbitrary single qubit manipulations, this system would be sufficient for the demonstration of a prototype excitonic quantum computer. 
A. Nazir, B. W. Lovett, G. A. D. Briggs