Observation of roton quasiparticles in Erbium

Observation of roton quasiparticles in Erbium

In collaboration with our theory collaborators from Innsbruck and Hannover, we have observed for the first time so-called roton quasiparticles in an ultracold bosonic gas of erbium atoms.

Our dipolar quantum gas group …

Our dipolar quantum gas group …

…we work with highly magnetic Erbium and Dysprosium atoms, which we cool to Nanokelvin temperatures in oder to explore the fascinating physics of the quantum world.

Working in ultrahigh vacuum

Working in ultrahigh vacuum

All our experiments are carried out at pressures of 10^(-11) mbar. In order to achieve these ultrahigh vacuums, carefully designed chambers need to be machined and assembled.

Trapping and cooling of quantum particles

Trapping and cooling of quantum particles

In order to trap and cool Erbium and Dysprosium in magneto optical traps, we use one of their narrow-linewidth transitions. These transitions need yellow laser light for Erbium and red one for Dysprosium.

Trapping ultracold quantum particles

Trapping ultracold quantum particles

In order to investigate quamtumphysics, we need high power lasers to trap atoms.  In our experiments we utilise for example green light to realise an optical lattice in which the atoms can be arranged on a periodic crystal structure.

Back in 2010

Back in 2010

Yes, it started like this with our optical table arriving under the snow…

Crossover from a BEC to a macrodroplet

Crossover from a BEC to a macrodroplet

Together with our theory colleagues from Hannover, we have investigated the formation of a macrodroplet state in an ultracold bosonic gas of erbium atoms.

The Dipolar Quantum Gas Group is one of the three teams composing the Innsbruck Center for Ultracold Atoms and Quantum Gases. We focus on highly magnetic magnetic Lanthanide atoms, Erbium and Dysprosium, which are a novel and powerful resource for realizing dipolar quantum matter.

The group, led by Francesca Ferlaino, is located at the  Institute for Experimental Physics (IExP) of the University of Innsbruck and at the Institute for Quantum Optics and Quantum Information (IQOQI) of the Austrian Academy of Sciences.

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Ground state of an ultracold Fermi gas of tilted dipoles in elongated traps

Now on New Journal of Physics

In collaboration with our theory colleagues from Serbia (Antun Balaž, Vladimir Veljic), Germany (Axel Pelster) and Brazil (Aristeu R. P. Lima), we have investigated the ground-state properties of dipolar Fermi gases, extending the current understanding to the case of arbitrary dipole orientation and trapping geometries.

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Max wins YAO 2018 Poster Prize

Maximilian Sohmen, , a PhD student in the RARE Lab,  has won the  prize for best poster of  YAO2018. Congratulations!

The Young Atom Opticians (YAO) conference is a yearly meeting, organized by and for PhD candidates in the field of atomic, molecular and optical physics. This year it took place in Glasgow (http://yao2018.phys.strath.ac.uk/).

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