Fast coherent control of neutral atom qubits in optical traps

Department of Physics, University of Wisconsin, Madison, USA

Monday 21^st November 2005, 3.30PM, Seminar Room AR103, Graduate Research Centre.

We present experimental progress in loading and control of single atoms in microscopic optical traps. Site specific Rabi rotations between hyperfine states are performed at MHz rates using tightly focused optical beams. The ratio of ground state coherence time to qubit manipulation time is measured to be about 5000 which makes this experiment attractive for two-qubit quantum gates. We discuss approaches to fast gates and quantum networking based on dipole-dipole coupling of highly excited Rydberg states.

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