Femto BEC News31 October 2025|ILP SengstockUltrafast many-body dynamics of dense Rydberg gases and ultracold plasmaPhoto: UHH/GroßmannWithin femtoseconds the strong light field of an ultrashort laser pulse can excite and ionize a few thousand atoms in an ultracold quantum gas. Here...5 April 2024|ILP SengstockCooling dynamics of a free ion in a Bose-Einstein condensatePhoto: L. Oghittu / Ph. Wessels-StaarmannWe investigate the dynamics of an ion moving through a homogeneous Bose-Einstein condensate (BEC) after an initial momentum is imparted. For this, we...26 January 2021|ILP SengstockUltrafast Electron Cooling in an Expanding Ultracold PlasmaPhoto: UHH/GroßmannPlasma dynamics critically depends on density and temperature, thus well-controlled experimental realizations are essential benchmarks for theoretical...4 July 2018|ILP SengstockAbsolute strong-field ionization probabilities of ultracold rubidium atomsPhoto: UHH/Wessels-Staarmann, "Non-resonant strong-field ionization yield of ultracold 87Rb", CC BY 4.0; cropped and remixedUnderstanding strong-field ionization requires a quantitative comparison between experimental data and theoretical models which is notoriously...Show all news