Im Neuenheimer Feld 226
Tel: 06221/ 54 19471
Fax: 06221/ 54 19545
"Atomic Systems in Extremely Strong Dynamical Fields"
Quantum dynamics of atomic and molecular systems
Our group studies atomic and molecular quantum systems with respect to their interactions on different levels of complexity. Of special importance is the application and extension of modern methods for the manipulation and quantum control to many-body quantum systems, in particular using coherent light. The systems under investigation range from highly excited Rydberg atoms over atomic and molecular quantum gases to molecular aggregates. The group develops technologies for trapping and cooling of neutral atoms as well as quantum-state sensitive diagnostics.
Latest news from the lab
|Dynamics of dipole-mediated Rydberg energy transport published in Science!||07.11.2013|
From a gas of ground state atoms we excited some atoms to highly excited Rydberg states. Similar to the light-harvesting complexes of photosynthesis, energy is transported from Rydberg atom to Rydberg atom, similar to a radio transmitter. To observe the transport of energy we use an electromagnetically induced transparency resonance, which makes up to 50 atoms absorb laser light within a characteristic radius around each Rydberg atom, making it possible to precisely measure the Rydberg atom distribution as a function of time. We were surprised to see that the Rydberg atoms quickly diffused from their original positions. Aided by a mathematical model we could show that the background gas of atoms crucially influences the energy transport dynamics, and the dynamics can be controlled by tuning the Rydberg-Rydberg interactions or the interaction with the laser fields.
Observing the Dynamics of Dipole-Mediated Energy Transport by Interaction Enhanced Imaging, Science 342, 954 (2013), or see our full list of publications
|We welcome our new PhD students Miguel Ferreira Cao and Luc Couturier to the group!||01.10.2013|
Miguel will work at the Rydberg experiment where he will investigate many-body physics invloving strongly interacting Rydberg gases. Luc will set up a new Rydberg experiment at the campus of the USTC in Shanghai involving ultracold Rydberg gases and quantum-degenerate gases of two-electron systems. Welcome to the group!
|Matthias Weidemüller appointed QianRen B Professor at USTC.||04.09.2013|