Group News (2024)

10 December 2024|ilp Sengstock

Single Fermionic Yb atoms in optical tweezers

Picture of Fermion 171Yb atoms in a tweezer array

Photo: UHH/Petersen

After successful optimization of trapping and imaging of individual bosonic 174Yb atoms we have now succeeded in trapping fermionic 173Yb atoms in...

22 August 2024|ilp Sengstock

First single Yb atoms in optical tweezers in Hamburg!

Individual Yb atoms in a small tweezer array

Photo: UHH/Petersen

For the first time we have loaded individual 174Yb atoms in a small tweezer array at a wavelength of 532nm. Atoms are imaged on the 1S0 -3P1...

26 April 2024|ilp Sengstock

We welcome our 3D MOT back to the lab

Photo: UHH / Sponselee

Shortly after the 2D MOT we trap atoms again int the 3D MOT. We now use diagonal beams inclined by 59 degrees with only 8mm diameter - signififcantly...

5 April 2024|ILP Sengstock

Cooling dynamics of a free ion in a Bose-Einstein condensate

A cloud of ultracold atoms can cool and completely stop an ion excited by a laser beam. Due to its charge, it polarizes the Bose-Einstein condensate.

Photo: L. Oghittu / Ph. Wessels-Staarmann

We investigate the dynamics of an ion moving through a homogeneous Bose-Einstein condensate (BEC) after an initial momentum is imparted. For this, we...

8 February 2024|ilp Sengstock

Blue 2D MOT back again

Photo: UHH/ Sponselee

After extensive rebuild of the main experiment and the cooling laser systems we have found the 2D magneto-optical trap (MOT) again!

The first step in...