Stuttgart 2012 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster 2

Q 35.67: Poster

Wednesday, March 14, 2012, 16:30–19:00, Poster.I+II

Development of a cryogenic surface-electrode ion trap — •Florian Leupold, Ludwig de Clercq, Joseba Alonso, Roland Hablützel, Ben Keitch, Daniel Kienzler, Frieder Lindenfelser, Hsiang-Yu Lo, Martin Sepiol, and Jonathan Home — ETH Zürich, Switzerland

We are developing a cryogenic ion-trap setup for investigating quantum control of trapped ions in microfabricated traps. The experiments we will perform involve quantum control of both beryllium and calcium ions, which presents a challenge for trap design due to the different ion masses, and also requires achromatic imaging.

We have built a prototype surface trap using photolithography, and have designed a reflective single-piece objective for imaging of the ions with minimal chromatic aberrations (currently under fabrication).

The experiments we wish to perform demand a high level of computer control. As a first step we are developing a home-built FPGA based servo-controller with an embedded microprocessor which can run without interruption and be updated by a computer interface. This incorporates a number of features which will be required for fast control of both the electrode potentials and the laser pulses with which the actual quantum-control experiments will be performed.