Controlling and Exploring Quantum Matter under Extreme Conditions
by
Prof.Immanuel Bloch(LMU & MPQ)
→
Europe/Berlin
Auditorium (MPI fuer Physik)
Auditorium
MPI fuer Physik
Description
Over the past years, ultracold quantum gases in optical lattices have offered remarkable
opportunities to investigate static and dynamic properties of strongly correlated bosonic
or fermionic quantum many-body systems. In this talk, I will show how it has recently not
only become possible to image such quantum gases with single atom sensitivity and single
site resolution, but also how it is now possible to coherently control single atoms on
individual lattice sites and to reveal the presence of individual quantum fluctuations of
the many-body system. I will demonstrate how 'Higgs' type excitations occur at 24 orders
of magnitude lower energy scales than in high energy experiments and how they can be
detected in our experimental setting. Finally, I will show how the unique control over
ultracold quantum gases has enabled the creation of negative temperature states of matter
and thereby the realization of Bose-Einstein condensation at absolute negative
temperatures.
