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Sebastian Knünz

A trapped-ion phonon laser and the detection of ultra-weak forces


2011. 108 S. 220 mm
Verlag/Jahr: SÜDWESTDEUTSCHER VERLAG FÜR HOCHSCHULSCHRIFTEN 2011
ISBN: 3-8381-2590-8 (3838125908)
Neue ISBN: 978-3-8381-2590-9 (9783838125909)

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This dissertation reports on the demonstration of a mechanical analogue to an optical laser, a "phonon laser", using a single trapped ion. Furthermore, we show that the dynamics of this system are surprisingly sensitive to external fields; we demonstrate phase synchronization ("injection locking") to an external signal by applying forces as weak as 5 yN (yocto=10 24). This enormous sensitivity might allow the detection of the nuclear spin of a single atom or molecule.
Born 1979 in Munich, Germany, he studied physics at the Ludwig-Maximilians-University here, before he started his PhD in the Group of Prof. Theodor W. Hänsch.