A new structure was proposed which was 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 could be obtained with gate control. Model calculations indicated that it was feasible to fabricate structures whose energy level structure was robust against thermal dephasing.

Quantum Computing via Defect States in Two-Dimensional Antidot Lattices. C.Flindt, N.A.Mortensen, A.P.Jauho: Nano Letters, 2005, 5[12], 2515-8