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arXiv:1310.8333 · Applied Physics B

Sub-micron positioning of trapped ions with respect to the absolute center of a standing-wave cavity field

Rasmus B. Linnet, Ian D. Leroux, Aurélien Dantan, Michael Drewsen

Published Oct 8, 2013• 6 citations
arXivHTMLPDF
DOI
10.1007/s00340-013-5666-0

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A laser adressing unit at 729 nm for up to 10 Ca40+ ions in a 1D-array was developed, focusing down to ca. 1 micron FWHM at a variable pitch of a few microns and allowing for an individual manipulation of each ion arounds its centered position at lowest cross-talk between neighbouring channels. The optical engine comprises of a wave-guide for defining the pitch between the different channels, moveable steering prisms in a telecentric setup and a final common objective to focus onto the ion trap within a vacuum chamber. This unit was now scaled up towards 50 ions, by placing and aligning several of the units precisely with respect to each other, still using the same high performant objective.