Quantum computing via defect states in two-dimensional anti-dot lattices
  We propose a new structure suitable for quantum computing in a solid state environment: designed defect states in antidot lattices superimposed on a two-dimensional electron gas at a semiconductor heterostructure. State manipulation can be obtained with gate control. Model calculations indicate that it is feasible to fabricate structures whose energy level structure is robust against thermal dephasing. 
Christian Flindt, Niels Asger Mortensen, and Antti-Pekka Jauho