Group Seminar via Zoom: How to use Ultracold Atoms to Determine the Influence of Dimensionality on Fermionic Superfluids

August 17, 2021

Thomas Lompe, University of Hamburg
Group Seminar via video conference (Zoom)
Tuesday, August 17th, 9:00 am (MEZ)

Due to the Covid-19 pandemic, we are now holding our group seminars and journal clubs via video conference.This procedure enables us to continue our research, enhance discussions and exchange important information.


In our recent experiments, we have used tailored optical potentials to create homogenous fermionic superfluids in two and three dimensions and measured their excitation spectrum with momentum resolved Bragg spectroscopy. This has allowed us to precisely determine the superfluid gap of these systems and thereby directly compare fermionic superfluids across different dimensionalities. Remarkably, we find that the superfluid gap follows the same universal function of the interaction strength in both systems, which suggests that there is no inherent difference in the stability of fermionic superfluidity between two- and three-dimensional quantum gases. We also compare our results to data from two- and three-dimensional superconductors, and find that when using a common parametrization of the interaction strength solid state and ultacold systems show very similar behavior.

If you would like to join our group seminars via Zoom, please contact us for more information.

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