In May our group was joined by Romain Müller, who will set up the new HiRes experiment. Romain previously worked on cooling of bosonic cesium and fermionic lithium at Heidelberg University. We all look forward to the exciting start of a new experiment. (05/2012)

The first BEC in the MIX laboratory was realized on the 15.2.2012! The magnification of the imaging system is only set to 1 at the moment, and so far it is not focussed very well. Nonetheless the low expansion of the cloud provides clear evidence for BEC. It took us roughly 5 months to make a BEC after moving the apparatus from Hannover to Århus. The number of atoms and the temperature seems to be the same as in our previous work! Now we can start to optimise! (02/2012)

The MIX experiment just recieved its new fibre amplifier! This will allow us to capture large samples of rubidium and potassium in a hybrid trap. Total powers of up to 50W will allow up to five times deeper traps under similar experimental conditions. Now we can finally proceed to make BECs in the MIX experiment once again! (1/2012)

In December our group was joined by Lars Wacker, who previously did his Diploma Thesis at Hamburg University. He is currently getting started on the MIX experiment with lots of plans for 2012. (01/2012)

The Lundbeck foundation has recently awarded a Junior Group Leader Fellowship to Jan Arlt to persue research on spinor gasses in optical lattices. The fellowships are intended for young researchers to establish or develop their own research groups in frontline basic- or applied research. (11/2011)

Lundbeck foundation

AU press release

Published in Science Express!

Interferometers with atomic ensembles constitute an integral part of modern precision metrology. However, these interferometers are fundamentally restricted by the shot noise limit, which can only be overcome by creating quantum entanglement among the atoms. We used spin dynamics in Bose-Einstein condensates to create large ensembles of up to 10⁴ pair-correlated atoms with an interferometric sensitivity -1.6 dB beyond the shot noise limit. Our proof-of-principle results point the way toward a new generation of atom interferometers. (10/2011)

Danish press release

Science DOI: 10.1126/science.1208798

The first MOT was realized in the new MIX laboratory on the 13.9.2011 only 10 working DAYS after moving the experiment from Hannover to Århus! The atom number looks good and we can now start setting up the atom transport and detection. (09/2011)

The MIX experiment has finally arrived in Århus and successfully moved into its new laboratory! The experiment was partially disassembled in Hannover and moved to Århus by truck. Only the vacuum system (including glass cells) remained in one piece and under vacuum. The delicate vacuum system remained intact which should allow us to rebuild the experiment very quickly! Have a look at more images from the move! (8/2010)