Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

A: Fachverband Atomphysik

A 31: Quantum gases (Fermions) (joint session A/Q)

A 31.5: Vortrag

Donnerstag, 14. März 2019, 15:00–15:15, S HS 1 Physik

Dynamics in the Dissipative Fermi-Hubbard Model — •Lukas Freystatzky^1,2, Koen Sponsele¹, Benjamin Abeln¹, Marcel Diem¹, Bastian Hundt¹, André Kochanke¹, Thomas Ponath¹, Bodhaditya Santra¹, Klaus Sengstock^1,2,3, Christoph Becker^1,3, and Ludwig Mathey^1,2,3 — ¹Zentrum für Optische Quantentechnologien, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — ²The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany — ³Institut für Laserphysik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

We study the decay dynamics of metastable ¹⁷³Yb atoms in a one dimensional lattice realizing a dissipative Fermi-Hubbard model. The dynamics are governed by the coherent evolution due to the Hamiltonian as well as an inelastic scattering process leading to two particle losses. We model the system with a Master equation approach and observe that the system is quickly driven into highly correlated Dicke states, which do not show dissipation any more. We observe a qualitatively similar result in experiment, and study the dependence of the particle number of the steady state on various parameters, motivated by the experimental findings.

The creation of strongly correlated states is a robust phenomenon and the dissipation can potentially be used to drive the system to very specific states, offering interesting opportunities for precision measurements.