Microwave quantum logic gates for trapped ions

C. Ospelkaus (), U. Warring, Y. Colombe, K. R. Brown, J. M. Amini, D. Leibfried and D. J. Wineland
Additional contact information
C. Ospelkaus: National Institute of Standards and Technology, 325 Broadway
U. Warring: National Institute of Standards and Technology, 325 Broadway
Y. Colombe: National Institute of Standards and Technology, 325 Broadway
K. R. Brown: National Institute of Standards and Technology, 325 Broadway
J. M. Amini: National Institute of Standards and Technology, 325 Broadway
D. Leibfried: National Institute of Standards and Technology, 325 Broadway
D. J. Wineland: National Institute of Standards and Technology, 325 Broadway

Nature, 2011, vol. 476, issue 7359, 181-184

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/nature10290

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