Our group studies atomic and molecular quantum systems with respect to their interactions on different levels of complexity. Of special importance is the application and extension of modern methods for the manipulation and quantum control to many-body quantum systems, in particular using coherent light. The systems under investigation range from highly excited Rydberg atoms over atomic and molecular quantum gases to molecular aggregates. The group develops technologies for trapping and cooling of neutral atoms as well as quantum-state sensitive diagnostics.

Eleonora Lippi, Manuel Gerken, Stephan Häfner, Marc Repp, Rico Pires, Michael Rautenberg, Tobias Krom, Eva D. Kuhnle, Binh Tran, Juris Ulmanis, Lauriane Chomaz, Matthias Weidemüller An Experimental Platform for Studying the Heteronuclear Efimov Effect with an Ultracold Mixture of Li-6 and Cs-133 Atoms Journal Article Few-Body Systems, vol. 66, no. 1, 2024. Sebastian Geier, Adrian Braemer, Eduard Braun, Maximilian Müllenbach, Titus Franz, Martin Gärttner, Gerhard Zürn, Matthias Weidemüller Time-reversal in a dipolar quantum many-body spin system Journal Article Phys. Rev. Research, vol. 06, iss. 3, no. 033197, pp. 1-8, 2024. Titus Franz, Sebastian Geier, Clément Hainaut, Adrian Braemer, Nithiwadee Thaicharoen, Moritz Hornung, Eduard Braun, Martin Gärttner, Gerhard Zürn, Matthias Weidemüller Observation of anisotropy-independent magnetization dynamics in spatially disordered Heisenberg spin systems Journal Article Phys. Rev. Research, vol. 06, iss. 3, no. 033131, pp. 1-12, 2024. Fachao Hu, Canzhu Tan, Yuhai Jiang, Matthias Weidemüller, Bing Zhu Observation of photon recoil effects in single-beam absorption spectroscopy with an ultracold strontium gas Journal Article Chin. Phys. B, vol. 31, pp. 016702, 2022. Philipp Schultzen, Titus Franz, Clément Hainaut, Sebastian Geier, Andre Salzinger, Annika Tebben, Gerhard Zürn, Martin Gärttner, Matthias Weidemüller Semiclassical simulations predict glassy dynamics for disordered Heisenberg models Journal Article Phys. Rev. B, 2022. Philipp Schultzen, Titus Franz, Sebastian Geier, Andre Salzinger, Annika Tebben, Clément Hainaut, Gerhard Zürn, Matthias Weidemüller, Martin Gärttner Glassy quantum dynamics of disordered Ising spins Journal Article Phys. Rev. B, vol. 105, pp. L020201, 2022. Saba Zia Hassan, Jonas Tauch, Milaim Kas, Markus Nötzold, Henry López Carrera, Eric S. Endres, Roland Wester, Matthias Weidemüller Associative detachment in anion-atom reactions involving a dipole-bound electron Journal Article Nat. Comm., vol. 13, pp. 818, 2022. Canzhu Tan, Xiaodong Lin, Yabing Zhou, Y. H. Jiang, Matthias Weidemüller, Bing Zhu Dynamics of position disordered Ising spins with a soft-core potential Journal Article Phys. Rev. B, vol. 105, pp. 104204, 2022. Saba Zia Hassan, Jonas Tauch, Milaim Kas, Markus Nötzold, Roland Wester, Matthias Weidemüller Quantum state-dependent anion-neutral detachment processes Journal Article J. Chem. Phys., vol. 156, pp. 094304, 2022. Sebastian Geier, Nithiwadee Thaicharoen, Clément Hainaut, Titus Franz, Andre Salzinger, Annika Tebben, David Grimshandl, Gerhard Zürn, Matthias Weidemüller Floquet Hamiltonian Engineering of an Isolated Many-Body Spin System Journal Article Science, vol. 374, pp. 1149, 2021. Christiane Stutterheim, Matthias Weidemüller Was die Welt zusammenhält: Babel und Bubbles Online 2021, visited: 01.01.2021. Annika Tebben, Clément Hainaut, Andre Salzinger, Sebastian Geier, Titus Franz, Thomas Pohl, Martin Gärttner, Gerhard Zürn, Matthias Weidemüller Nonlinear absorption in interacting Rydberg electromagnetically-induced-transparency spectra on two-photon resonance Journal Article Phys. Rev. A, vol. 103, pp. 063710, 2021. Binh Tran, Michael Rautenberg, Manuel Gerken, Eleonora Lippi, Bing Zhu, Juris Ulmanis, Moritz Drescher, Manfred Salmhofer, Tilman Enss, Matthias Weidemüller Fermions meet two bosons -- the heteronuclear Efimov effect revisited Journal Article Braz. J. Phys., vol. 51, pp. 316, 2021. Chang Qiao, Canzhu Tan, Julia Siegl, Fachao Hu, Zhijing Niu, Yuhai Jiang, Matthias Weidemüller, Bing Zhu Rydberg blockade in an ultracold strontium gas revealed by two-photon excitation dynamics Journal Article Phys. Rev. A, vol. 103, pp. 063313, 2021. David Grimshandl, Manuel Gerken, Eleonora Lippi, Binh Tran, Saba Zia Hassan, Jan Hendrik Becher, Selim Jochim, Matthias Weidemüller, Gunnar Föhner, Steffen Brucker, Frank Schumacher, Wolfgang Beldermann, Venelin Angelov, Stefan Hetzel, Stefan Hummel, Simon Muley, Bernd Windelband, Christoph Eisner, Marco Zugaj, Philipp Bayer, Dario Ernst, Marcel Gehrlein, Helmut Jacob, Jens Pfeifle, Andreas Treskatsch, Martin Ulmschneider, Philipp M. Preiss The HDvent Emergency Ventilator System Working paper arXiv e-prints: 2012.13005, 2020. Markus Nötzold, Saba Zia Hassan, Jonas Tauch, Eric Enerds, Roland Wester, Matthias Weidemüller Thermometry in a Multipole Ion Trap Journal Article Appl. Sci., vol. 10, pp. 5264, 2020. Marcel Neugebauer, Laurin Fischer, Alexander Jäger, Stefanie Czischek, Selim Jochim, Matthias Weidemüller, Martin Gärttner Neural network quantum state tomography in a two-qubit experiment Journal Article Phys. Rev. A, vol. 102, pp. 042604, 2020. Matthias Weidemüller Kollektiv am kritischen Punkt Journal Article Physik Journal, vol. 19, iss. 8, pp. 24, 2020. Charles Möhl, Nicholas Spong, Yuechun Jiao, Chloe So, Teodora Ilieva, Matthias Weidemüller, Charles S Adams Photon correlation transients in a weakly blockaded Rydberg ensemble Journal Article J. Phys. B: At. Mol. Opt. Phys., vol. 53, iss. 8, pp. 084004, 2020. M Ferreira-Cao, V Gavryusev, T Franz, R Ferracini Alves, A Signoles, G Zürn, M Weidemüller Depletion imaging of Rydberg atoms in cold atomic gases Journal Article J. Phys. B: At. Mol. Opt. Phys., vol. 53, iss. 8, pp. 084005, 2020. Michiteru Mizoguchi, Yichi Zhang, Masaya Kunimi, Akira Tanaka, Shuntaro Takeda, Nobuyuki Takei, Vineet Bharti, Kuniaki Koyasu, Tetsuo Kishimoto, Dieter Jaksch, Alexander Glaetzle, Martin Kiffner, Guido Masella, Guido Pupillo, Matthias Weidemüller, Kenji Ohmori Ultrafast creation of overlapping Rydberg electrons in an atomic BEC and Mott-insulator lattice Journal Article Phys. Rev. Lett., vol. 124, pp. 253201, 2020. Junyang Yuan, Shiwei Liu, Xincheng Wang, Zhenjie Shen, Yixuan Ma, Huanyu Ma, Qiuxiang Meng, Tian-Min Yan, Yizhu Zhang, Alexander Dorn, Matthias Weidemüller, Difa Ye, Yuhai Jiang Ellipticity-dependent sequential over-barrier ionization of cold rubidium Journal Article Phys. Rev. A, vol. 102, pp. 043112, 2020. Junyang Yuan, Yixuan Ma, Renyuan Li, Huanyu Ma, Yizhu Zhang, Difa Ye, Zhenjie Shen, Tianmin Yan, Xincheng Wang, Matthias Weidemüller Momentum Spectroscopy for Multiple Ionization of Cold Rubidium in the Elliptically Polarized Laser Field Journal Article Chin. Phys. Lett., vol. 37, no. 5, pp. 053201, 2020. Tilman Enss, Binh Tran, Michael Rautenberg, Manuel Gerken, Eleonora Lippi, Moritz Drescher, Bing Zhu, Matthias Weidemüller, Manfred Salmhofer Scattering of two heavy Fermi polarons: resonances and quasi-bound states Journal Article Phys. Rev. A, vol. 102, pp. 063321, 2020.