Hannover 2013 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 43: Precision spectroscopy of atoms and ions VI (with Q)
A 43.2: Vortrag
Freitag, 22. März 2013, 11:30–11:45, B 305
Development of Scalable Ion Traps for Optical Clocks — •Tobias Burgermeister1, Karsten Pyka1, Jonas Keller1, Heather L. Partner1, Kestutis Kurselis2, Roman Kiyan2, Carsten Reinhardt2, Daniel Hagedorn1, Rudolf Meeß1, and Tanja E. Mehlstäubler1 — 1Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig — 2Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover
Our work focuses on the realization of an optical clock with a fractional frequency inaccuracy as low as 10−18 and improved short-term stability. It is based on multiple 115In+ ions which are sympathetically cooled by 172Yb+ ions.
Within a new European joint research project we develop chip-based linear ion traps for quantum metrology. Using an operating prototype trap [1,2] we characterize excess micromotion and demonstrate sympathetic cooling of In+/Yb+-crystals. We show that our trap design provides a highly controllable environment for precision spectroscopy and experiments with ion Coulomb crystals.
An advanced next generation ion trap, will be based on gold coated aluminum nitride wafers, which are laser machined at LZH and PTB. For this new trap design we perform theoretical and experimental thermal studies at MIKES (Finland) and CMI (Czech Republic), which will characterize the influence of trap heating on the clock measurement.
[1] Pyka et al., arXiv:1206.5111v1 (2012)
[2] Herschbach et al., Appl. Phys. B 107, 891 (2012)