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Phosphorus Donors in Silicon for Quantum Computation

Dr Cameron Wellard

Centre for Quantum Computer Technlology, School of Physics, University of Melbourne

Friday 22nd July 2005, 3.30PM, Seminar Room AR103, Graduate Research Centre.

The electronic wavefunction of the phosphorus donor in silicon is complicated by the crystalline structure of the silicon host. Interference between the six degenerate conduction band minima leads to a highly oscillatory spatial dependence, which is manifest in parameters like the exchange energy between neighbouring donors. In this presentation I will discuss the origin of this oscillatory behaviour, as well as the implications for the construction of a phosphorus-in-silicon quantum information processor.

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