Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 60: Materiewellen und Technologie

Q 60.4: Vortrag

Freitag, 16. März 2012, 11:15–11:30, V53.01

Thick-film technology for ultra-high vacuum interfaces of micro-structured traps — •Delia Kaufmann, Thomas Collath, M. Tanveer Baig, Peter Kaufmann, Eman Asenwar, Michael Johanning, and Christof Wunderlich — Universität Siegen, NT Fakultät, Dept. Physik, 57072 Siegen, Deutschland

Miniaturized traps for ions or neutral atoms are useful tools in quantum information science. For operation, they typically need a large number of control voltages or currents, and rf or microwave fields. Furthermore, an ultra-high vacuum environment is needed for operating such traps.

In order to produce custom made ultra-high vacuum compatible interfaces for a large number of electrical signals, we adopt the thick-film technology [1]. These interfaces permit voltages of hundreds of volts and currents of several amperes and allow for very compact vacuum setups. Such printed circuits can also be useful as pure in-vacuum devices. We demonstrate a specific interface, which provides eleven current feedthroughs, more than 70 dc feedthroughs and a feedthrough for radio frequencies. We achieve a pressure in the low 10⁻¹¹ mbar range and demonstrate the full functionality of the interface by trapping chains of cold ytterbium ions, which requires the presence of all of the above mentioned signals.
[1] D. Kaufmann, T. Collath, M. T. Baig, P. Kaufmann, E. Asenwar, M. Johanning, C. Wunderlich, arXiv:1107.4082v1 [quant-ph] (Appl. Phys. B, in print)