Stuttgart 2012 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 3: Präzisionsmessungen und Metrologie 1
Q 3.8: Vortrag
Montag, 12. März 2012, 12:15–12:30, V47.02
Towards spectroscopy of the clock transition of Yb in a magic wavelength optical lattice — •Gregor Mura, Charbel Abou Jaoudeh, Tobias Franzen, and Axel Görlitz — Institut für Experimentalphysik, HHU Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf
Optical clocks using neutral atoms hold the promise to eventually reach an inaccuracy at a level of 10−18. So far optical lattice clocks have been demonstrated for Yb, Sr and Hg. Here we report on loading an 1D magic wavelength optical lattice with Yb which is a crucial step towards the realization of a compact and transportable Yb lattice clock. After precooling in a MOT operating at 399 nm a few 106 atoms are loaded into a postcooling MOT at 556 nm where a temperature of ∼50 µK is reached. More than 5 % of the atoms can then be transferred into a resonator-based optical lattice. We have achieved a lifetime of a few 100 ms which is sufficient for the operation of an optical clock. The next step will be spectroscopy of the clock transition 61S0 → 63P0 of Yb at 578 nm.