The law of diffusion governs the transport of heat and charge in most materials. Here we investigate the breakdown of diffusion in the transport of fermionic quantum particles on a lattice described by a homogeneous Hubbard model. arXiv:1005.3545

Using the collapses and revivals of coherent matter wave fields we were able to reveal the presence of effective coherent multi-body interactions and the atom number statistics at the sites of an optical lattice. Additional media and press release (deu eng). Original publication at Nature 465, 197-201 (2010)

30 Mar '10 - after some time of rebuilding the basic setup, we are happy to welcome the condensate phase back in our lab.

When the interactions between atoms in a gas of particles become increasingly attractive, one expects the gas to intuitively shrink in size. Here we report that a fermionic quantum gas in a a lattice can actually expand for increasing attractive interactions. Science 327, 1621 (2010)

We have investigated the non-equilibrium dynamics in tunnel coupled 1D Bose-liquids, extending the famous Landau-Zener problem to a many-body setting. arXiv:1003.4956

22 Oct '09 - Following our move to Munich the Single Atoms team at MPQ has made our first Munich Bose-Einstein Condensate (only 7 weeks after the move). 

Sep '09. The move from Mainz to Munich is completed and all experiments have arrived at their new homes. The lab renovations are also almost complete and we can begin to setup the experiments again, soon.

Check out some photos from the move here!

We have mapped out the phase diagram of a superfluid in a 3D optical lattice and validated the quantum simulation using QMC calculations. Read more: arxiv:0905.4882