Sebastian Wolf

TL;DR: The GBAR project at CERN as mentioned in this paper measured the free fall acceleration of ultracold neutral anti hydrogen atoms in the terrestrial gravitational field, which consists preparing anti hydrogen ions (one antiproton and two positrons) and sympathetically cooling them with Be (+) ions.

TL;DR: A Bayes experimental design approach to microscopy is implemented in order to maximize the gain in spatial information and realize a single particle microscope by using deterministically extracted laser-cooled Ca^{+} ions from a Paul trap as probe particles for transmission imaging.

TL;DR: The GBAR project as mentioned in this paper proposes to measure the free fall acceleration of neutral antihydrogen atoms in the terrestrial gravitational field by photoionizing them with Be+ ions to a few 10 μ K.

TL;DR: A light source in free space, where the photon statistics depends on the direction of observation, undergoing a continuous crossover between photon bunching and antibunching is demonstrated, demonstrating that this source radiates fundamentally different types of light alike.

TL;DR: In this article, an experimental approach allowing to prepare antihydrogen atoms for the GBAR experiment was discussed, and the feasibility of all necessary experimental steps: the capture of incoming ions at keV energies in a deep linear RF trap, sympathetic cooling by laser cooled Be$^+$ ions, transfer to a miniaturized trap and Raman sideband cooling of an ion pair to the motional ground state, and further reducing the momentum of the wavepacket by adiabatic opening of the trap.