Mainz 2017 – wissenschaftliches Programm

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SYAD: Symposium SAMOP Dissertation-Prize 2017

SYAD 1: SAMOP Dissertation-Prize

SYAD 1.2: Hauptvortrag

Mittwoch, 8. März 2017, 11:30–12:00, RW 1

Quantum dynamics in strongly correlated one-dimensional Bose gases — •Florian Meinert — 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

Quantum many-body systems exhibiting strong correlations give rise to fascinating novel phenomena in physics. In recent years, ultracold atomic gases confined to optical lattice potentials have opened compelling new routes for implementing many-body Hamiltonians with unprecedented parameter control. Moreover, they allow us to explore many-body systems also far out-of-equilibrium and trace their coherent dynamics in real time.

We have studied phenomena in the dynamics of strongly correlated bosonic quantum gases confined to a one-dimensional (1D) geometry. For a 1D Hubbard chain we investigated correlated tunneling dynamics when the many-body system is suddenly exposed to a strong force. This allowed us to observe how interacting quantum particles prepared in a Mott-insulator tunnel through multiple wells of the lattice for situations where a single particle cannot move at all. Our studies further comprise the coherent evolution of an interacting superfluid, which exhibits Bloch-oscillations modulated by interaction-driven collapse and revivals. Furthermore, we realized a tunable Luttinger liquid. Building on investigations of its collective excitations, we have recently probed the dynamics of a strongly coupled impurity atom injected into the liquid and found an intriguing Bloch-oscillation type motion induced in the correlated system in the absence of an imprinted lattice structure.