487 citations · 1.2k across the 8 of their papers we have counts for
8 papers
Probing the Interface of a Phase-Separated State in a Repulsive Bose-Fermi Mixture
Rianne S. Lous, Isabella Fritsche, Michael Jag +4
We probe the interface between a phase-separated Bose-Fermi mixture consisting of a small BEC of K residing in a large Fermi sea of Li. We quantify the residual spatial…
Thermometry of a deeply degenerate Fermi gas with a Bose-Einstein condensate
Rianne S. Lous, Isabella Fritsche, Michael Jag +2
We measure the temperature of a deeply degenerate Fermi gas, by using a weakly interacting sample of heavier bosonic atoms as a probe. This thermometry method relies on the thermal…
Lifetime of Feshbach dimers in a Fermi-Fermi mixture of Li and K
Michael Jag, Marko Cetina, Rianne S. Lous +3
We present a joint experimental and theoretical investigation of the lifetime of weakly bound dimers formed near narrow interspecies Feshbach resonances in mass-imbalanced Fermi-Fe…
Ultrafast many-body interferometry of impurities coupled to a Fermi sea
M. Cetina, M. Jag, R. S. Lous +8
The fastest possible collective response of a quantum many-body system is related to its excitations at the highest possible energy. In condensed-matter systems, the corresponding…
Decoherence of Impurities in a Fermi Sea of Ultracold Atoms
Marko Cetina, Michael Jag, Rianne S. Lous +4
We investigate the decoherence of K impurities interacting with a three-dimensional Fermi sea of Li across an interspecies Feshbach resonance. The decoherence is measu…
Observation of a Strong Atom-Dimer Attraction in a Mass-Imbalanced Fermi-Fermi Mixture
Michael Jag, Matteo Zaccanti, Marko Cetina +5
We investigate a mixture of ultracold fermionic K atoms and weakly bound LiK dimers on the repulsive side of a heteronuclear atomic Feshbach resonance. By radio…
Metastability and Coherence of Repulsive Polarons in a Strongly Interacting Fermi Mixture
Christoph Kohstall, Matteo Zaccanti, Michael Jag +5
Ultracold Fermi gases with tuneable interactions represent a unique test bed to explore the many-body physics of strongly interacting quantum systems. In the past decade, experimen…
Integrated Atom Detector Based on Field Ionization near Carbon Nanotubes
B. Grüner, M. Jag, A. Stibor +5
We demonstrate an atom detector based on field ionization and subsequent ion counting. We make use of field enhancement near tips of carbon nanotubes to reach extreme electrostatic…