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Phys Rev Lett. 2012 Aug 24;109(8):080501. Epub 2012 Aug 20.

Controlling fast transport of cold trapped ions.

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QUANTUM, Institut für Physik, Universität Mainz, Mainz, Germany.


We realize fast transport of ions in a segmented microstructured Paul trap. The ion is shuttled over a distance of more than 10(4) times its ground state wave function size during only five motional cycles of the trap (280 μm in 3.6 μs). Starting from a ground-state-cooled ion, we find an optimized transport such that the energy increase is as low as 0.10±0.01 motional quanta. In addition, we demonstrate that quantum information stored in a spin-motion entangled state is preserved throughout the transport. Shuttling operations are concatenated, as a proof-of-principle for the shuttling-based architecture to scalable ion trap quantum computing.

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