Heidelberg 2015 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics III
Q 62.26: Poster
Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer
Double-MOT fluorescence detection on a mesoscopic atom chip — •Ilka Kruse, Jan Mahnke, Andreas Hüper, Wolfgang Ertmer, and Carsten Klempt — Institut für Quantenoptik, Leibniz Universität Hannover
We demonstrate simultaneous fluorescence detection of two mesoscopic atomic ensembles in a MOT configuration using one set of MOT beams. Two magnetic quadrupole fields are generated with a versatile mesoscopic atom chip [1], allowing for the simultaneous operation of two mirror MOTs. The performance of the double-MOT is efficiently optimized by a genetic optimization algorithm [2], yielding a maximum of 9 · 109 atoms in the two MOTs. Fluorescence detection using MOTs is especially well-suited to count the number of atoms with high accuracy. The simultaneous detection of two atom clouds allows for interferometric measurements on the Heisenberg limit. Our approach can be easily scaled to detect more than two components, as desired for sub-shot-noise measurements with spin dynamics in Bose-Einstein condensates [3].
[1] S. Jöllenbeck et al., Phys. Rev. A 83, 043406 (2011)
[2] I. Geisel et al., Appl. Phys. Lett. 102, 214105 (2013)
[3] B. Lücke et al., Science 334, 773 (2011)