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Neutral Atom Quantum Register

2004; American Physical Society; Volume: 93; Issue: 15 Linguagem: Inglês

10.1103/physrevlett.93.150501

1092-0145

D. Schrader, I. Dotsenko, M. Khudaverdyan, Y. Miroshnychenko, Arno Rauschenbeutel, Dieter Meschede,

Cold Atom Physics and Bose-Einstein Condensates

We demonstrate the realization of a quantum register using a string of single neutral atoms which are trapped in an optical dipole trap. The atoms are selectively and coherently manipulated in a magnetic field gradient using microwave radiation. Our addressing scheme operates with a high spatial resolution, and qubit rotations on individual atoms are performed with 99% contrast. In a final readout operation we analyze each individual atomic state. Finally, we have measured the coherence time and identified the predominant dephasing mechanism for our register.