Thesis

1. Tuning anomalous diffusion of ultracold Fermi gases in disorder using quantum and cosmological mechanisms
   (PhD thesis, 2024) PDF
    
2. Fermi-Superfluide in ungeordneten Potentialen
   (Diploma thesis, September 2019) PDF

Preprints

1. Unravelling Interaction and Temperature Contributions in Unpolarized Trapped Fermionic Atoms in the BCS Regime
   Sejung Yong, Sian Barbosa, Jennifer Koch, Felix Lang, Axel Pelster, Artur Widera
   preprint, arXiv:2311.08853
   https://arxiv.org/abs/2311.08853
    
2. Fermi accelerating an Anderson-localized Fermi gas to superdiffusion
   Sian Barbosa, Maximilian Kiefer-Emmanouilidis, Felix Lang, Jennifer Koch, Artur Widera
   preprint, arXiv:2311.08224
   https://arxiv.org/abs/2311.08224
    
3. Stability and sensitivity of interacting fermionic superfluids to quenched disorder
   Jennifer Koch, Sian Barbosa, Felix Lang, Artur Widera
   preprint, arXiv:2310.11213
   https://arxiv.org/abs/2310.11213

Publications

2024

1. Characterizing quantum gases in time-controlled disorder realizations using cross-correlations of density distributions
   S. Hiebel, B. Nagler, S. Barbosa, J. Koch, and A. Widera
   New J. Phys. 26, 013042 (2024)
   DOI 10.1088/1367-2630/ad1b82
    
2. What can we learn from diffusion about Anderson localization of a degenerate Fermi gas?
   Sian Barbosa, Maximilian Kiefer-Emmanouilidis, Felix Lang, Jennifer Koch, Artur Widera
   Phys. Rev. Research 6, 033039
   https://doi.org/10.1103/PhysRevResearch.6.033039
   Data: https://zenodo.org/records/10697491

2023

1. A quantum engine in the BEC–BCS crossover
   Jennifer Koch, Keerthy Menon, Eloisa Cuestas, Sian Barbosa, Eric Lutz, Thomás Fogarty, Thomas Busch, Artur Widera
   Nature 621, pages 723–727 (2023)
   https://www.nature.com/articles/s41586-023-06469-8

2022

1. Ultracold Bose Gases in Dynamic Disorder with Tunable Correlation Time
   Benjamin Nagler, Martin Will, Silvia Hiebel, Sian Barbosa, Jennifer Koch, Michael Fleischhauer und Artur Widera
   Phys. Rev. Lett. 128, 233601
   https://doi.org/10.1103/PhysRevLett.128.233601


2. Observing the loss and revival of long-range phase coherence through disorder quenches
   Benjamin Nagler, Sian Barbosa, Jennifer Koch, Giuliano Orso und Artur Widera
   PNAS January 4, 2022, 119 (1)
   DOI:10.1073/pnas.2111078118

2020

1. Dipole oscillations of fermionic superfluids along the BEC-BCS crossover in disordered potentials
   Benjamin Nagler, Kevin Jägering, Ameneh Sheikhan, Sian Barbosa, Jennifer Koch, Sebastian Eggert, Imke Schneider und Artur Widera
   Phys. Rev. A101, 053633 (2020)
   DOI:10.1103/PhysRevA.101.053633
   https://journals.aps.org/pra/abstract/10.1103/PhysRevA.101.053633


2. Cloud shape of a molecular Bose-Einstein condensate in a disordered trap: a case study of the dirty boson problem
   Benjamin Nagler, Milan Radonjić, Sian Barbosa, Jennifer Koch, Axel Pelster und Artur Widera
   New J. Phys.22, 033021 (2020)
   DOI: 10.1088/1367-2630/ab73cb
   https://arxiv.org/abs/1911.02626