Focusing a deterministic single-ion beam

Autor(en)

Wolfgang Schnitzler, Georg Jacob, Robert Fickler, Ferdinand Schmidt-Kaler, Kilian Singer

Abstrakt

We focus down an ion beam consisting of single Ca-40(+) ions to a spot size of a few micrometers using an einzel lens. Starting from a segmented linear Paul trap, we have implemented a procedure that allows us to deterministically load a predetermined number of ions by using the potential shaping capabilities of our segmented ion trap. For single-ion loading, an efficiency of 96.7(7)% has been achieved. These ions are then deterministically extracted out of the trap and focused down to a 1 sigma-spot radius of (4.6 +/- 1.3) mu m at a distance of 257 mm from the trap center. Compared to previous measurements without ion optics, the einzel lens is focusing down the single-ion beam by a factor of 12. Due to the small beam divergence and narrow velocity distribution of our ion source, chromatic and spherical aberration at the einzel lens is vastly reduced, presenting a promising starting point for focusing single ions on their way to a substrate.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Universität Ulm

Journal

New Journal of Physics

Band

12

Anzahl der Seiten

14

ISSN

1367-2630

DOI

https://doi.org/10.1088/1367-2630/12/6/065023

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/d2e4a26b-ba42-4f76-b106-71c2345fddcf