4 papers
Experimental extraction of the quantum effective action for a non-equilibrium many-body system
Maximilian Prüfer, Torsten V. Zache, Philipp Kunkel +5
Far-from-equilibrium situations are ubiquitous in nature. They are responsible for a wealth of phenomena, which are not simple extensions of near-equilibrium properties, ranging fr…
Simultaneous Readout of Noncommuting Collective Spin Observables beyond the Standard Quantum Limit
Philipp Kunkel, Maximilian Prüfer, Stefan Lannig +5
We augment the information extractable from a single absorption image of a spinor Bose-Einstein condensate by coupling to initially empty auxiliary hyperfine states. Performing uni…
Magic density in a self-rephasing ensemble of trapped ultracold atoms
Alexis Bonnin, Cyrille Solaro, Xavier Alauze +1
We investigate the collective spin dynamics of a self-rephasing bosonic ensemble of Rb trapped in a 1D vertical optical lattice. We show that the combination of the frequenc…
A trapped ultracold atom force sensor with a m-scale spatial resolution
Xavier Alauze, Alexis Bonnin, Cyrille Solaro +1
We report on the use of an ultracold ensemble of Rb atoms trapped in a vertical lattice as a source for a quantum force sensor based on a Ramsey-Raman type interferometer. W…