ERBIUM LAB

Dipolar Quantum Gases of Erbium Atoms

Erbium has very special properties that make it unique: a very strong magnetic moment, many valence electrons, clock transitions, and an extremely rich internal atomic structure.

In the ERBIUM LAB we bring all these properties in the quantum regime together to study strongly dipolar gases both in the continuum and in optical lattices. Recently, the ERBIUM team has observed roton excitations, the counterintuitive and long-sought supersolid states, deformed Fermi surface, Bose-Hubbard systems with long-range interaction, spin manipulation via the clock transition, and much more!

A full list of the ERBIUM LAB Publications can be found here

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Lab news

Albert received the IQOQI Thesis Prize

Albert Frisch from the ERBIUM Team has received the prestigious IQOQI Dissertation Prize 2015. Congratulation!!

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Ignaz L. Lieben-Preis for Francesca

On Tuesday 24th of Nov. Francesca has been awarded by the prestigious Ignaz Lieben-Preis from the ÖAW. Congrats! Read the press release on the IQOQI website, on the ÖAW and on ORF

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Emergence of chaotic scattering in ultracold Er and Dy

Now in PRX! We show that for ultracold magnetic lanthanide atoms (Er and Dy) chaotic scattering emerges due to a combination of anisotropic interaction potentials and Zeeman coupling under an external magnetic field. The scattering is studied in a collaborative experimental and theoretical effort, involving our group, the Stuttgart Dy Group

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Ultracold polar molecules composed of strongly magnetic atoms

Now in PRL! We created a novel type of dipolar system made of two ultracold bosonic dipolar atoms bounded into a molecules. This work is the result of a combined experimental and theoretical effort between our group, the cold collisions group at LAC in France, and the theory group at Temple University (USA).

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Anisotropic Relaxation Dynamics in a Dipolar Fermi Gas Driven Out of Equilibrium

We report on the observation of a large anisotropy in the rethermalization dynamics of an ultracold dipolar Fermi gas driven out of equilibrium. Our system consists of an ultracold sample of strongly magnetic Er167 fermions, spin polarized in the lowest Zeeman sublevel. In this system, elastic collisions arise purely from

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Observation of Fermi surface deformation in a dipolar quantum gas

Now in Science! In the presence of isotropic interactions, the Fermi surface of an ultracold Fermi gas is spherical. Introducing anisotropic interactions can deform it. This effect is subtle and challenging to observe experimentally. We report the observation of such a Fermi surface deformation in a degenerate dipolar Fermi gas of

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