Darmstadt 2008 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 50: Poster Ultrakalte Atome
Q 50.6: Poster
Donnerstag, 13. März 2008, 16:30–19:00, Poster C2
Ion trap for efficient single ion-photon coupling — Robert Maiwald1,2, •Markus Sondermann1, Gerd Leuchs1, James C. Bergquist2, Dietrich Leibfried2, Joe Britton2, and David J. Wineland2 — 1Institut für Optik, Information und Photonik, Max Planck Forschungsgruppe, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany — 2National Institute of Standards and Technology, Boulder, CO 80305, USA
We present the design of an ion trap that allows for the localization of an ion in the focal point of a deep parabolic mirror. The trap consists of a single radio frequency (RF) electrode and two ground electrodes. The RF electrode and one of the ground electrodes are placed concentrically on the optical axis of a conducting parabolic mirror that establishes the second ground electrode. This geometry results in a trapping potential that follows the axial symmetry of parabolic mirrors. Furthermore, the trap design enables minimally invasive optical access to the ion from almost the entire solid angle. The latter property is essential for efficient coupling of single ions to single photons in free space.
The trap design can be adapted for other applications by replacing the mirror by a planar electrode. Using this more general design the ion can still be optically accessed from at least half to over 90% of the solid angle. First test results are presented.