"Dipolar Quantum Matter near Absolute Zero Temperature"

Mon, 09/10/2018 - 4:15pm
428 Pupin Hall
Francesca Ferlaino
Institut für Experimentalphysik, Universität Innsbruck, Innsbruck, Austria and Institute for Quantum Optics and Quantum Information (IQOQI), Innsbruck
"Dipolar Quantum Matter near Absolute Zero Temperature"

Quantum gases of ultracold atoms are a powerful resource to address fundamental questions and realize novel paradigms in few- and many-body quantum physics. The potential of such systems is becoming ever more enabling as scientists acquire an increasingly fine control over optical manipulation (e.g. cooling, trapping, and state preparation) and inter-particle interactions.

Recently, a novel class of atomic species, possessing a large magnetic character and an extraordinary rich atomic spectrum, is entering the stage, offering a new conceptual twist for the field. In our laboratories, we have realized the first dipolar Bose-Einstein condensate and Fermi gas, using a magnetic rare-earth species: Erbium. In the quantum regime, Er atoms possess interparticles interactions of genuinely different nature, in which the ordinary magnetically-tunable contact interaction combines with the long-range and anisotropic magnetic dipolar interaction. The mere existence and competition between these two sources of interactions dictate the physics at play, disclosing a variety of intriguing, yet counter-intuitive, quantum phenomena and phase of matter.

This talk will provide an overview from the Innsbruck prospective of some fascinating dipolar phenomena with dipolar quantum gases (Er) and the newly-achieved heteronuclear dipolar mixtures (Er-Dy).

About the speaker

Francesca Ferlaino’s research is dedicated to the experimental study of fundamental few- and many-body phenomena realized with ultracold quantum gases of atoms and molecules. The key advantage of such systems is the high degree of control achievable over their internal and external degrees of freedom. Interactions between particles, trapping environments and quantum states of atoms can be adjusted almost “on demand”, opening enormous possibilities for studying effects belonging to very different branches of physics.  The main focus here is the realization of exotic states of matter such as giant three-body states, quantum dipolar gases of highly magnetic atoms and ultracold polar molecules.

More details can be found here.