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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1992),
  • paper QThA1

Planar Paul traps and trap arrays

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Abstract

We report the cooling and trapping of barium ions in a novel planar Paul trap. Unlike other if quadrupole traps, the electrodes of a planar Paul trap are confined to one or more parallel planes. We apply the same photolithographic techniques used for semiconductor devices to construct inicrotraps with dimensions on a micron scale. Micro traps permit entirely new studies, for example, superradiance of a few ions, which occurs as ion-ion distances approach one wavelength of light. Photolithography can also generate an array of traps on a single substrate for an atomic clock, where each trap contains a single isolated ion in the Lamb-Dicke regime, resulting in a high signal-to-noise ratio. This achieves the same goal as a linear rf trap1 but without any coupling between the ions.

© 1992 Optical Society of America

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