Quantum gates and memory using microwave-dressed states

N. Timoney, I. Baumgart, M. Johanning, A. F. Varón, M. B. Plenio, A. Retzker () and Ch. Wunderlich ()
Additional contact information
N. Timoney: Faculty of Science and Technology, University of Siegen
I. Baumgart: Faculty of Science and Technology, University of Siegen
M. Johanning: Faculty of Science and Technology, University of Siegen
A. F. Varón: Faculty of Science and Technology, University of Siegen
M. B. Plenio: Institute for Theoretical Physics, University of Ulm
A. Retzker: Institute for Theoretical Physics, University of Ulm
Ch. Wunderlich: Faculty of Science and Technology, University of Siegen

Nature, 2011, vol. 476, issue 7359, 185-188

Abstract: Ions micro-managed It is possible to manipulate trapped atomic ions coherently using laser light, but it is difficult to exert similar control with radio frequency or microwave radiation. Two groups report new approaches that enable microwave control over trapped atomic ions for quantum information processing. Ospelkaus et al. describe a device that enables microwave control, using the magnetic fields generated by electrodes integrated into a micro-fabricated ion trap. The internal quantum states of ions held in a trap can be coherently manipulated, and entangled states generated. In a second paper, Timoney et al. report an approach based on applying microwave pulses to trapped ions, which transforms them into a state isolated from outside disturbances. This technique significantly extends the coherence time of the system, decisively improving the prospects of microwave-driven ion-trap quantum information processing.

Date: 2011
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DOI: 10.1038/nature10319

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