Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster: Quantum Optics and Photonics III
Q 42.5: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
Loading Scheme for Surface Traps With Beryllium Ions — •Johannes Mielke1, Henning Hahn1, Timko Dubielzig1, Martina Wahnschaffe1,2, and Christian Ospelkaus1,2 — 1Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany — 2PTB, Bundesallee 100, 38116 Braunschweig, Germany
Surface electron ion traps are promising systems for scalable quantum information processing. In one of the present projects in our group, we are developing advanced trap designs with integrated microwave conductors providing the near field configuration to drive 9Be+ hyperfine qubit transitions [1]. A scheme for efficient loading of surface traps with beryllium ions is presented. We use a nanosecond pulsed laser for ablation of neutral atoms from a beryllium wire and a laser system for subsequent two-photon ionization. The ionization laser is based on an infrared diode laser, which is frequency quadrupled by two cavity-enhanced frequency doubling stages, similar to [2]. Furthermore we discuss a spectroscopy scheme using a Beryllium-vapor lamp for locking the ionisation laser to the neutral beryllium 2p 1S0 → 2s 1P1 transition.
[1] M. Carsjens et al., Appl. Phys. B, 114: 243-250 (2014)
[2] H.-Y. Lo et al., Appl. Phys. B, 114: 17-25 (2014).