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We demonstrate confinement of individual atomic ions in a radio-frequencyPaul trap with a novel geometry where the electrodes are located in a singleplane and the ions confined above this plane. This device is realized with arelatively simple fabrication procedure and has important implications forquantum state manipulation and quantum information processing using largenumbers of ions. We confine laser-cooled Mg-24 ions approximately 40 micrometerabove planar gold electrodes. We measure the ions' motional frequencies andcompare them to simulations. From measurements of the escape time of ions fromthe trap, we also determine a heating rate of approximately five motionalquanta per millisecond for a trap frequency of 5.3 MHz.Comment: 4 pages, 4 figure

Microfabricated Surface-Electrode Ion Trap for Scalable Quantum Information Processing